vue2 element使用笔记总结

element

A Vue.js 2.0 UI Toolkit for Web

项目地址：https://gitcode.com/gh_mirrors/eleme/element

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开心就好1314520

8573人浏览 · 2021-01-05 11:07:28

开心就好1314520 · 2021-01-05 11:07:28 发布

1、 select组件，值改变，无法更改label值

解决：绑定change事件，

Change() {
    this.$forceUpdate();
},

2、el-tree组件文字超出容器不出现横向滚动条问题

.el-tree>.el-tree-node{
    min-width:100%;
    display: inline-block;
}

3.组件绑定原生事件使用 `.native` 修饰符

<el-button
    size="small"
    type="text"
    @click.native.prevent="handleEdit($index, row)">打印日结单
</el-button>

4、时间选择器禁用日期通过 `disabledDate` 设置

<el-date-picker
      v-model="value2"
      align="right"
      type="date"
      placeholder="选择日期"
      :picker-options="pickerOptions">
</el-date-picker>
<script>
  export default {
    data() {
      return {
        pickerOptions: {
          disabledDate(time) {
            return time.getTime() > Date.now();
          },
        },
        value2: '',
      };
    }
  };
</script>

5、表单手机号、身份证校验规则


//1、校验身份证

export const checkIdNumberValid=(tex)=>{
  var tip = '输入的身份证号有误！';
  var num = tex;
  num = num.toUpperCase();
  var len, re;
  len = num.length;
  if(len == 0) return true;

  //身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X。
  if (!(/(^\d{15}$)|(^\d{17}([0-9]|X)$)/.test(num))){
      return false;
  }

  //验证前两位地区是否有效
  var aCity= {11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江",31:"上海",
      32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",42:"湖北",43:"湖南",
      44:"广东",45:"广西",46:"海南",50:"重庆",51:"四川",52:"贵州",53:"云南",54:"西藏",61:"陕西",
      62:"甘肃",63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外"}

  if(aCity[parseInt(num.substr(0,2))] == null){
      return false;
  }

  //当身份证为15位时的验证出生日期。
  if (len == 15){
      re = new RegExp(/^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/);
      var arrSplit = num.match(re);

      //检查生日日期是否正确
      var dtmBirth = new Date('19' + arrSplit[2] + '/' + arrSplit[3] + '/' + arrSplit[4]);
      var bGoodDay;
      bGoodDay = (dtmBirth.getYear() == Number(arrSplit[2])) && ((dtmBirth.getMonth() + 1) == Number(arrSplit[3])) && (dtmBirth.getDate() == Number(arrSplit[4]));
      if (!bGoodDay){
          return false;
      }
  }

  //当身份证号为18位时，校验出生日期和校验位。
  if (len == 18){
      re = new RegExp(/^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/);
      var arrSplit = num.match(re);
      //检查生日日期是否正确
      var dtmBirth = new Date(arrSplit[2] + "/" + arrSplit[3] + "/" + arrSplit[4]);
      var bGoodDay;
      bGoodDay = (dtmBirth.getFullYear() == Number(arrSplit[2])) && ((dtmBirth.getMonth() + 1) == Number(arrSplit[3])) && (dtmBirth.getDate() == Number(arrSplit[4]));
      if (!bGoodDay){
          return false;
      }
      else{
          //检验18位身份证的校验码是否正确。
          //校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。
          var valnum;
          var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
          var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
          var nTemp = 0, i;
          for(i = 0; i < 17; i ++){
              nTemp += num.substr(i, 1) * arrInt[i];
          }
          valnum = arrCh[nTemp % 11];
          if (valnum != num.substr(17, 1)){
              return false;
          }
      }
  }
  return true;
}
//2、
 let idCardValidity = (rule, code, callback) => {
      var city = { 11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林", 23: "黑龙江 ", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南", 42: "湖北 ", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏 ", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外 " };
      var tip = ""
      var pass = true
 
      if (!code || !/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[012])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/i.test(code)) {
        tip = "身份证号格式错误"
        pass = false;
      } else if (!city[code.substr(0, 2)]) {
        tip = "地址编码错误"
        pass = false
      } else {
        // 18位身份证需要验证最后一位校验位
        if (code.length === 18) {
          code = code.split('')
          // ∑(ai×Wi)(mod 11)
          // 加权因子
          var factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2]
          // 校验位
          var parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2]
          var sum = 0
          var ai = 0
          var wi = 0
          for (var i = 0; i < 17; i++) {
            ai = code[i]
            wi = factor[i]
            sum += ai * wi
          }
          var last = parity[sum % 11];
          if (parity[sum % 11] != code[17]) {
            tip = "校验位错误"
            pass = false
          }
        }
      }
      if (!pass) {
        callback(new Error(tip))
      } else {
        callback()
      }
      // if (!pass) alert(tip)
      // return pass
    }
idCard: [{ required: true, message: '请输入证件号', trigger: 'blur' },
          {
            pattern: /(^\d{8}(0\d|10|11|12)([0-2]\d|30|31)\d{3}$)|(^\d{6}(18|19|20)\d{2}(0\d|10|11|12)([0-2]\d|30|31)\d{3}(\d|X|x)$)/,
            message: '请输入正确的证件号'
          },
          { validator: idCardValidity, trigger: 'blur' }],
      }

//校验手机号
var checkPhone = (rule, value, callback) => {
        if (!value) {
          return callback(new Error('手机号不能为空'));
        } else {
          const reg = /^1[3|4|5|7|8][0-9]\d{8}$/
          console.log(reg.test(value));
          if (reg.test(value)) {
            callback();
          } else {
            return callback(new Error('请输入正确的手机号'));
          }
        }
      };

//校验手机号或者座机号
var checkPhone = (rule, value, callback) => {
	      if (value === '') {
	        callback(new Error('请输入联系人电话'));
	      } else {
	        let regPone = null;
	        let mobile = /^1(3|4|5|6|7|8|9)\d{9}$/; //最新16手机正则
	        let tel = /^(0[0-9]{2,3}\-)([2-9][0-9]{4,7})+(\-[0-9]{1,4})?$/; //座机
	        if (value.charAt(0) == 0) {    // charAt查找第一个字符方法，用来判断输入的是座机还是手机号
	          regPone = tel;         
	        } else {          
	          regPone = mobile;
	        }
	        if (!regPone.test(value)) {
	          return callback(
	            new Error("请填写正确的座机/手机号")
	          );
	        }
	        callback();        
	      }
	    };

6、upload图片上传2种方式

//头像上传
<el-upload
     class="avatar-uploader"
     :action="UploadUrl()"
     ref="upLoad"
     accept="image/png, image/jpg, image/jpeg, image/bmp"
     :show-file-list="false"
     :on-success="handleAvatarSuccess"
      :before-upload="beforeAvatarUpload"
>
            <img v-if="this.avatar" :src="this.avatar" class="avatar_img" />
            <el-avatar v-else :src="src1"></el-avatar>
</el-upload>
//methods
UploadUrl(){
      return                     
  `http://shequ.goufangbian.com.cn/fengheapi/app/uploadImage/${this.$route.query.userId}`
    },
handleAvatarSuccess(res, file) {
      console.log("上传图片", res);
      if (res.code == 0) {
        this.avatar = res.data;
        this.$toast.success("上传成功!");
      }
    },
    beforeAvatarUpload(file) {
      const type =
        file.type === "image/jpeg" || "image/jpg" || "image/bmp" || "image/png";
      const isLt2M = file.size / 1024 / 1024 < 10;
      if (!type) {
        this.$toast.fail("上传图片格式PNG、JPG、JPEG、BMP!");
      }
      if (!isLt2M) {
        this.$toast.fail("上传图片大小不能超过 10MB!");
      }
      return type && isLt2M;
    },

//图片数量限制
<el-form-item label="图片上传(最多只可以上传3张)">
    <el-upload
     class="avatar-uploader"
     action="customize"
     ref="upLoad"
     list-type="picture"
     :accept="'image/*'"
     capture="camera"
     :http-request="upLoad"
     :show-file-list="true"
     :file-list="ruleForm.imageList"
     :on-exceed="handleExceed"
     :on-success="handleAvatarSuccess"
     :before-upload="beforeAvatarUpload"
     :limit="3">
        <i class="el-icon-upload avatar-uploader-icon"></i>
        <div class="el-upload__tip" slot="tip">支持jpg/png/bmp文件，且不超过10M</div>
      </el-upload>
</el-form-item>
//methods
upLoad(params){
   // 通过 FormData 对象上传文件
    const _file = params.file;
     var formData = new FormData();
     formData.append("file", _file);
      updataImg(formData).then(res => {
       if(res.code == 0){
       this.disabledFlg = false
        this.ruleForm.imageList.push(res.page.url)
        this.$message.success('图片上传成功!');
        }else{
          this.$message.error(res.msg);
         }
       });
   },
 handleAvatarSuccess(res, file) {
    //this.form.pic = URL.createObjectURL(file.raw);
    console.log(this.form.pic)
 },
handleExceed(files, fileList) {
   this.$message.warning(`当前限制选择 3 个文件，本次选择了 ${files.length} 个文件，共选择了 ${fileList.length} 个文件`);
   },
beforeRemove(file, fileList) {
    //return this.$confirm(`确定移除 ${ file.name }？`);
  },
beforeAvatarUpload(file) {
 //const isJPG = file.type === 'image/jpeg';
  const testmsg = /^image\/(jpeg|png|jpg|bmp)$/.test(file.type)
  const isLt10M = file.size / 1024 / 1024 < 10;
  if (!testmsg) {
    this.$message.error('上传图片格式不对!')
    return false
  }
  if (!isLt10M) {
   this.$message.error('上传头像图片大小不能超过 10MB!');
   }
   return testmsg && isLt10M;
},

7.select input 表单校验是赋值后仍提示校验不通过，需要在初始化时将该字段初始化上，并且如果绑定的值是Number类型，赋值成空字符串也会报错

8、input @input 事件防抖函数避免多次触发（使用loadsh函数）

cnpm i loadsh --save
import _ from "loadsh";
<el-table-column label="价格" align="center">
    <template slot-scope="{ row, $index }">
       <el-input
         :readonly="row.asFixPrice == 0 ? false : true"
         v-model="row.itemPrice"
         type="number"
         @input="changePrice(row)"
         ></el-input>
    </template>
</el-table-column>

//修改价格
changePrice: _.debounce(async row => {
     row.itemCharge = Number(row.itemPrice) * Number(row.itemNumber);
      let params = {
        id: row.id,
        itemPrice: row.itemPrice,
        itemNumber: row.itemNumber,
        itemCharge: row.itemCharge
      };
      let res = await API["editPackageServiceLittleTypeById"](params);
      console.log(res, "111");
      if (res.code != 1) return Message.error(res.message);
      Message.success(res.message);
}, 500),

9.树形结构默认选中第一子项，展示数据

 let node = this.treeData[0].children[0];
 this.$nextTick(() => {
 // 默认高亮选中节点
 this.$refs.tree.setCurrentKey(node.id);
 this.$refs.tree.setCheckedNodes([node]);
});

10、强制刷新

 this.$forceUpdate();

11、table 合计初始化不展示及设置高度

/deep/ .el-table{

    // overflow:visible !important;
    .el-table__body-wrapper{
      overflow-y: scroll;
    }
  }

<el-table
          :data="tableData"
          border
          :header-cell-style="{background:'rgb(246,247,251)',color:'#606266'}"
          stripe
          height="calc(100% - 340px)"
        >

12、动态校验

 <el-form-item v-if="needRequired" label="统一社会信用代码"  :prop="
                  needRequired
                    ? 'unitNo'
                    : 'noUnitNo'
                ">
              <el-input
                v-model="ruleForm.unitNo"
                placeholder="请输人统一社会信用代码"
              ></el-input>
            </el-form-item>
 rules: {
        unitNo:[
           { required: true, message: "请输入统一社会信用代码", trigger: "blur" },
        ],
        noUnitNo:[
           { required: false },
        ],
}
watch: {
  'ruleForm.unit' (newValue, oldValue) {
    if(newValue){
      this.needRequired=true
    }else{
      this.needRequired=false
    }
  }
},

13、上传

 <!-- action 表示图片要上传到的后台API地址 -->
 <el-upload :action="uploadURL" :on-preview="handlePreview" :on-remove="handleRemove" list-type="picture" :headers="headerObj" :on-success="handleSuccess">
     <el-button size="small" type="primary">点击上传</el-button>
 </el-upload>

 addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 商品所属的分类数组
        goods_cat: [],
        // 图片的数组
        pics: [],
        // 商品的详情描述
        goods_introduce: '',
        attrs: []
      },
// 上传图片的URL地址
  uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      // 图片上传组件的headers请求头对象
 headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
// 处理移除图片的操作
    handleRemove(file) {
      // console.log(file)
      // 1. 获取将要删除的图片的临时路径
      const filePath = file.response.data.tmp_path
      // 2. 从 pics 数组中，找到这个图片对应的索引值
      const i = this.addForm.pics.findIndex(x => x.pic === filePath)
      // 3. 调用数组的 splice 方法，把图片信息对象，从 pics 数组中移除
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    // 监听图片上传成功的事件
    handleSuccess(response) {
      console.log(response)
      // 1. 拼接得到一个图片信息对象
      const picInfo = { pic: response.data.tmp_path }
      // 2. 将图片信息对象，push 到pics数组中
      this.addForm.pics.push(picInfo)
      console.log(this.addForm)
    },

14、el-table 加loading效果，v-loading,分页disabled，table中图片加lazy；table 设置列为fixed后错位，fixed加上宽度，前一列不加宽度

15、控制table全选反选

<el-checkbox v-model="checkedAll" @change="checkedAllChange">全选</el-checkbox>

 <el-table
        :data="chargeData.nonTaxchargeItems"
        :header-cell-style="{
           background: 'rgb(246,247,251)',
           color: '#606266'
         }"
         ref="table1"
         stripe
         style="width: 100%"
          @selection-change="handleTable1SelectionChange"
>
....
</el-table>
<el-table
    :data="chargeData.chargeItems"
    :header-cell-style="{
     background: 'rgb(246,247,251)',
        color: '#606266'
     }"
     stripe
     ref="table2"
     style="width: 100%"
     @selection-change="handleTable2SelectionChange"
>...
</el-table>

//data
checkedAll:false,//全选
checkedTable1All:false,//非税全选
checkedTable2All:false,//其他全选
//methods
//切换全选
    checkedAllChange(val){
       console.log(val,this.checkedAll,'全选')

        if(val){

          this.checkedTable1All=true
          this.checkedTable2All=true
        //非税
          this.$nextTick(() => {
            for (let i = 0; i < this.chargeData.nonTaxchargeItems.length; i++) {
              this.$refs.table1.toggleRowSelection(
                this.chargeData.nonTaxchargeItems[i],
                true
              );
            }
          });
        //其他费用
         this.$nextTick(() => {
            for (let i = 0; i < this.chargeData.chargeItems.length; i++) {
              this.$refs.table2.toggleRowSelection(
                this.chargeData.chargeItems[i],
                true
              );
            }
          });
      }else{

          this.checkedTable1All=false
          this.checkedTable2All=false
         //非税
          this.$nextTick(() => {
            for (let i = 0; i < this.chargeData.nonTaxchargeItems.length; i++) {
              this.$refs.table1.toggleRowSelection(
                this.chargeData.nonTaxchargeItems[i],
                false
              );
            }
          });
        //其他费用
         this.$nextTick(() => {
            for (let i = 0; i < this.chargeData.chargeItems.length; i++) {
              this.$refs.table2.toggleRowSelection(
                this.chargeData.chargeItems[i],
                false
              );
            }
          });
      }
      this.checkedAll=val
    },
//非税
    handleTable1SelectionChange(val){
      //console.log(val,'非税',val.length==this.chargeData.nonTaxchargeItems.length)
      if(val.length==this.chargeData.nonTaxchargeItems.length){
        this.checkedTable1All=true
      }
      else{
         this.checkedTable1All=false
      }
      this.handleSelectionChange(val)
    },
    //其他
     handleTable2SelectionChange(val){
      //console.log(val,'其他',val.length==this.chargeData.chargeItems.length)
      if(val.length==this.chargeData.chargeItems.length){
        this.checkedTable2All=true
      }
      else{
         this.checkedTable2All=false
      }
      this.handleSelectionChange(val)
    },
//处理数据
handleSelectionChange(val) {
      console.log(val,'处理')
      let itemArray = [];
      let totalLocal = 0;
      val.forEach(item => {
        //未结算的
        if (item.asSettled == 0) {
          //计算总金额
          totalLocal += Number(item.itemCharge);
          itemArray.push(item);
        }
      });
      this.multipleSelection=[...this.multipleSelection,...itemArray];
      this.totalCharge += totalLocal;
    },
//watch
 watch: {
//非税
    checkedTable1All(val){
      console.log('非税',val,this.checkedTable2All)
      if(val&&this.checkedTable2All){
        this.checkedAll=true
      }
      else{
        this.checkedAll=false
      }
    },
//其他
    checkedTable2All(val){
       console.log('其他',val,this.checkedTable1All)
      if(val&&this.checkedTable1All){
        this.checkedAll=true
      }
      else{
        this.checkedAll=false
      }
    },
}

16、表格固定列最后一行显示不全


.el-table__fixed-right {
  height: 100% !important;
}

17、输入框用正则限制但绑定值未更新

<el-input 
  v-model="form.name" 
  placeholder="请输入" 
  @keyup.native="form.name=form.name.replace(/[^\d.]/g,'')"
/>

18、去除type="number"输入框聚焦时的上下箭头及`type=number` 输入中文，焦点上移

<el-input class="clear-number-input" type="number"></el-input>
//去除箭头
.clear-number-input ::v-deep input[type="number"]::-webkit-outer-spin-button,
.clear-number-input ::v-deep input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none !important;
}
//上移
::v-deep .el-input__inner {
    line-height: 1px !important;
}

<el-input type="number" class="clear-number-input" />

19、只校验表单其中一个字段

this.$refs['form'].validateField('mobile', valid => {
  if (valid) {
    // 发送验证码
  }
})
//多值参数传数组

20、表格跨分页多选

<el-table row-key="id">
  <el-table-column type="selection" reserve-selection></el-table-column>
</el-table>

21、表单不想显示label但又想显示必填星号怎么办 label=' '

22、el-tree 展开/收起所有节点

<el-tree ref="tree"></el-tree>

expandTree(expand = true) {
  const nodes = this.$refs['tree'].store._getAllNodes()
  nodes.forEach(node => {
    node.expanded = expand
  })
}

23、el-popover 位置偏移问题

<el-popover ref="popover" placement="left" trigger="click">
</el-popover>

// 获取数据后
this.$nextTick(() => {
  this.$refs['popover'].updatePopper()
})

24、el-dialog 的 destroy-on-close 属性设置无效

<el-dialog :visible.sync="visible" v-if="visible" destroy-on-close>
</el-dialog>

25、el-cascader 选择后需要点击空白处才能关闭

<el-cascader
  ref="cascader"
  @change="onChange"
/>

onChange() {
  this.$refs['cascader'].dropDownVisible = false
}

26、点击按钮使用图片查看器

<template>
  <section>
    <el-button @click="open">打开图片预览</el-button>
    <el-image-viewer
      v-if="show"
      :on-close="onClose"
      :url-list="urls"
      :initial-index="initialIndex"
    />
  </section>
</template>

<script>
import ElImageViewer from 'element-ui/packages/image/src/image-viewer'

export default {
  components: {
    ElImageViewer
  },

  data() {
    return {
      show: false,
      urls: ['https://img0.baidu.com/it/u=391928341,1475664833&fm=26&fmt=auto&gp=0.jpg'],
      initialIndex: 0
    }
  },

  methods: {
    open() {
      this.show = true
    },

    onClose() {
      this.show = false
    }
  }
}
</script>

27、时间选择器限制

 <el-form-item label="预约时间">
             
              <el-date-picker
                type="datetime"
                placeholder="选择开始时间"
                v-model="ruleForm.arrivalTime"
                format="yyyy-MM-dd HH:mm"
                value-format="yyyy-MM-dd HH:mm"
                :picker-options="startDatePicker"
              ></el-date-picker
              >-
              <el-date-picker
                type="datetime"
                placeholder="选择结束时间"
                v-model="ruleForm.endArrivalTime"
                format="yyyy-MM-dd HH:mm"
                value-format="yyyy-MM-dd HH:mm"
                 :picker-options="endDatePicker"
              ></el-date-picker>
            </el-form-item>

 data() {
    return {
      startDatePicker:this.beginDate(),
      endDatePicker: this.processDate(),
}}，
methods:{
     beginDate() {
      const self = this;
      return {
        disabledDate(time) {
          console.log(time.getTime(),'选择时间1')
          return time.getTime() > Date.now()
        }
      };
    },
    processDate() {
      const self = this;
      return {
        disabledDate(time) {
         return time.getTime() < Date.now()- 8.64e7;
        }
      };
    },
}

28、表单提交刷新及input type 更改

<el-form
        ref="form"
        auto-complete="on"
        @submit.native.prevent
        :model="form"
        label-width="0"
        :rules="rules"
      >
        <div class="login_title">
          <h2>武清区殡仪车辆监控平台</h2>
          <h4 class="little_title">
            Wuqing District Funeral vehicle monitoring platform
          </h4>
        </div>
        <div class="login_input">
          <el-form-item label="" prop="name">
            <el-input
              :key="passwordType"
              :type="passwordType"
              ref="password"
              placeholder="请输入账号"
              prefix-icon="el-icon-user"
              v-model="form.name"
              name="name"
              tabindex="1"
              auto-complete="on"
              @keyup.enter.native="login"
            >
              <i
                slot="suffix"
                @click="showPwd"
                class="iconfont"
                :class="
                  passwordType === 'password' ? 'icon-no_eye' : 'icon-eye'
                "
              ></i>
            </el-input>
          </el-form-item>
        </div>
        <div class="login_btn_box">
          <el-button
            :loading="loading"
            class="login_btn"
            type="primary"
            style="width: 100%; margin-bottom: 30px;"
            @click.native.prevent="login"
            >登录</el-button
          >
        </div>
      </el-form>

import * as API from "../api/map";
export default {
  data() {
    return {
      loading: false,
      form: {
        name: "",
      },
      rules: {
        name: [{ required: true, message: "请输入账号", trigger: "blur" }],
      },
      passwordType: "password",
    };
  },
  methods: {
    showPwd() {
      if (this.passwordType === "password") {
        this.passwordType = "";
      } else {
        this.passwordType = "password";
      }
      this.$nextTick(() => {
        this.$refs.password.focus();
      });
    },
    login() {
      this.$refs.form.validate(async (valid) => {
        if (valid) {
          this.loading = true;
          let res = await API["login"]({ ...this.form });
          this.loading = false;
          if (res.code !== 1) return this.$message.error(res.message);
          sessionStorage.setItem("gps_token", res.data);
          this.$router.push("/home");
        } else {
          console.log("error submit!!");
          return false;
        }
      });
    },
  },
};

29、el-upload 模拟点击

有时候我们想用 el-upload 的上传功能，但又不想用 el-upload 的样式，如何实现呢？方法也很简单，隐藏 el-upload，然后再模拟点击就可以了。

30、el-input 设置值后不能修改

 this.$set(this.form, 'description', '')

31、Table 单行根据数据状态禁止选择

<el-table-column
   type="selection"
  :selectable='canCheck'
   width="55">
</el-table-column>
canCheck(row){
      if(row.processState=='已出藏'){
        return false
      }else{
        return true
      }
    },

32、table 默认选中

this.$nextTick(() => {
            this.tableData.forEach(
              (item) => {
                if (item.asSettled == 0) {
                    //未结算的默认选中
                  this.$refs.multipleTable[0].toggleRowSelection(item, true);
                }
              }
            );
          });

33、 table fixed 错位

   <el-table
          ref="filetable"
          :data="tableData"
          :header-cell-style="{
            background: 'rgb(246,247,251)',
            color: '#606266',
          }"
          :height="tableHeight"

          border
          @selection-change="handleSelectionChange">
</el-table>

 watch: {
    tableData(val){
          this.doLayout();

    },
},
 methods: {
    //
    doLayout(){
      this.$nextTick(() => {
              this.$refs.filetable.doLayout()
            })
    },
}

34、table 点击行变颜色、选中变颜色

<el-table
          ref="refTableDom"
          :data="tableData"
        
          :row-class-name="tableRowClassName"
          border
          :stripe="false"
          :row-style="rowStyle"
          @row-click='rowClick'
        >
          <el-table-column type="selection" align="center" width="55">
          </el-table-column>
</el-table>

rowClick(row, column, event){
      console.log(row,column, event,'点击')
      let index = this.tableData.findIndex(x=>x==row)
       console.log(index,'点击')
       this.rowIndex = index
    },
     rowStyle ({ row, rowIndex }) {
      if (this.rowIndex === rowIndex) {
        return {
          'background-color': 'green !important',
          "color":"#fff!important"
        }
      }
    },
tableRowClassName({ row, rowIndex }) {


        for(let i=0;i<this.multipleSelection.length;i++) {
          if (row === this.multipleSelection[i]) {
              return 'bg-row';
          }
         }
         if (row.deadGiveStateName == "未交接") {
            return "no-handover";
          } else if(row.deadGiveStateName == "已交接") {
            return "has-handover";
          }else{
            return ''
          }

    },

去除hover样式

.el-table--enable-row-hover .el-table__body tr:hover > td {
    background-color: inherit!important;
  }

35、table合并行

 spanArr:[],
 position:0,
 spanArr2:[],
 position2:0,

  objectSpanMethod({ row, column, rowIndex, columnIndex }) {
        if (columnIndex === 0) {
                const _row = this.spanArr[rowIndex];
                const _col = _row > 0 ? 1 : 0;
                return {
                    rowspan: _row,
                    colspan: _col
                };
            }
             if (columnIndex === 1) {
                const _row = this.spanArr2[rowIndex];
                const _col = _row > 0 ? 1 : 0;
                return {
                    rowspan: _row,
                    colspan: _col
                };
            }
    },
 getSpanArr(data){
      data.forEach((item, index) => {
            if (index === 0) {
                this.spanArr.push(1);
                this.position = 0;
                 this.spanArr2.push(1);
                this.position2 = 0;
            } else {
                // 判断当前元素与上一个元素是否相同
                if (data[index].businessCode === data[index - 1].businessCode) {
                    this.spanArr[this.position] += 1;
                    this.spanArr.push(0);
                } else {
                    this.spanArr.push(1);
                    this.position = index;
                }
                //姓名
                if (data[index].deadName === data[index - 1].deadName) {
                    this.spanArr2[this.position2] += 1;
                    this.spanArr2.push(0);
                } else {
                    this.spanArr2.push(1);
                    this.position2 = index;
                }
            }
        })
    },

36、多个table切换合并的表头样式变乱
1、v-show代替v-if
2、使用v-if 并且给el-table加不同的key

 <!-- 骨灰盒 -->
        <el-table
          key='tableData'
          v-if="ruleForm.itemType==0"
          :data="tableData"
           :span-method="objectSpanMethod"
          id='tableData'
          height="calc(100% - 40px)"
          :header-cell-style="{
            background: '#ccc',
            color: '#606266'
          }"
          stripe
          border
          ref="Table"
        >
</el-table>
 <!-- 纸棺 -->
        <el-table
          v-if="ruleForm.itemType==1"
          :data="tableData1"
          key='tableData1'
           id='tableData1'
            :span-method="objectSpanMethod"
          height="calc(100% - 40px)"
          :header-cell-style="{
            background: '#ccc',
            color: '#606266'
          }"
          stripe
          border
          ref="Table"
        >
</el-table>

37、table合并单元格、切换、打印、导出

请求数据

//改变物品类型
      changeType(){
        this.tableData=[];
        this.tableData1=[];
         this.spanArr=[]
         this.position=0
        // this.onSubmit()
      },
//查询
    async onSubmit() {
      this.loading = true;
      let postData = {
       ...this.ruleForm,
       queryDate:this.$dayjs(this.ruleForm.queryDate).format("YYYY-MM")
      };
      //查询接口
      let res = await Type["listStockCheck"](postData)
       this.loading = false;
      if(res.code !==1) return this.$message.error(res.message)
      // this.tableData = res.data.list
      if(this.ruleForm.itemType==0){
        //骨灰盒
       this.getSpanArr(res.data)
       this.tableData = this.colspanMethod(res.data)
      }else{
        //纸棺
        this.getSpanArr(res.data)
        this.tableData1 = this.colspanMethod(res.data)

      }

    },

表格合并展示

 //
    objectSpanMethod({ row, column, rowIndex, columnIndex }) {
        if (columnIndex === 1) {
                const _row = this.spanArr[rowIndex];
                const _col = _row > 0 ? 1 : 0;
                return {
                    rowspan: _row,
                    colspan: _col
                };
            }

    },
    //
     getSpanArr(data){
      data.forEach((item, index) => {
            if (index === 0) {
                this.spanArr.push(1);
                this.position = 0;

            } else {
                // 判断当前元素与上一个元素是否相同
                if (data[index].supplierName === data[index - 1].supplierName) {
                    this.spanArr[this.position] += 1;
                    this.spanArr.push(0);
                } else {
                    this.spanArr.push(1);
                    this.position = index;
                }
            }
        })
    },

表格导出

import FileSaver from "file-saver";
import XLSX from "xlsx";
 //导出
      exportExcel() {
      let xlsxParam = { raw: true };
      let name =''
      let time = this.$dayjs(this.ruleForm.queryDate).format("YYYY-MM")
      let  wb={}
      if(this.ruleForm.itemType==0){
        if( this.tableData.length==0) return this.$message('暂无数据导出')
        //骨灰盒
          wb= XLSX.utils.table_to_book(
         document.querySelector("#tableData"),
          xlsxParam
        );
        name='骨灰盒盘点表'

      }else{
        //纸棺
        if( this.tableData1.length==0) return this.$message('暂无数据导出')
          wb= XLSX.utils.table_to_book(
         document.querySelector("#tableData1"),
          xlsxParam
        );
        name='纸棺盘点表'
      }

      /* 从表生成工作簿对象 */

      /* 获取二进制字符串作为输出 */
      var wbout = XLSX.write(wb, {
        bookType: "xlsx",
        bookSST: true,
        type: "array",
      });
      try {
        FileSaver.saveAs(
          //Blob 对象表示一个不可变、原始数据的类文件对象。
          //Blob 表示的不一定是JavaScript原生格式的数据。
          //File 接口基于Blob，继承了 blob 的功能并将其扩展使其支持用户系统上的文件。
          //返回一个新创建的 Blob 对象，其内容由参数中给定的数组串联组成。
          new Blob([wbout], { type: "application/octet-stream" }),
          //设置导出文件名称
          `${name}${(new Date()).valueOf()}.xlsx`
        );
      } catch (e) {
        if (typeof console !== "undefined") console.log(e, wbout);
      }
      return wbout;
    },

Clodop打印表格

// 合并行
      colspanMethod(dataList) {
        for (let i = 0; i < dataList.length; i++) {
          // 循环开始行
          let startRow
          // 需合并的行数
          let rowspan = 1
          // 循环到最后一行时
          if (i === dataList.length - 1) {
            // 如果最后一行和倒数第二行属性不同，则rowspan=1；否则直接结束循环
            if (dataList[i].supplierName !== dataList[i - 1].supplierName) {
              dataList[i].rowspan = rowspan
            }
            break
          }
          // 内层循环记录rowspan的数量
          for (let j = i; j < dataList.length - 1; j++) {
            // 记录循环结束的行数
            startRow = j
            // 属性相同则rowspan+1；否则直接结束内循环
            if (dataList[j].supplierName === dataList[j + 1].supplierName) {
              rowspan++
            } else {
              break
            }
          }
          // 为数组添加rowspan属性
          dataList[i].rowspan = rowspan
          // 控制外循环从内循环结束的行数开始
          i = startRow
        }

        return  dataList
      },
 //打印
    printForm(){
      if(this.ruleForm.itemType == 0&&this.tableData.length==0) return this.$message('暂无数据打印');
      if(this.ruleForm.itemType == 1&&this.tableData1.length==0) return this.$message('暂无数据打印');
       let LODOP = getLodop();
      if (LODOP == null || !LODOP) {
        this.$.messager.alert(
          "系统提示",
          "您的浏览器不支持打印控件，请用IE重试或安装打印控件后重试"
        );
        return;
      }
      let printDate = this.$dayjs(this.ruleForm.queryDate).format("YYYY年MM月")
      let tbody=''
      let html =''
      let goodName=''


      if(this.ruleForm.itemType == 0){
        goodName=`${printDate}骨灰盒盘点表`
        //骨灰盒
         this.tableData.forEach((item,index)=>{
          if(item.rowspan){
            tbody+=`
            <tr>
                <td style="padding:5px 0;">${index+1}</td>
                <td style="padding:0 5px;" rowspan="${item.rowspan}">${item.supplierName || ''}</td>
                <td>${item.itemName || ''}</td>
                <td>${item.itemUnit||'' }</td>
                <td>${item.itemPrice||'' }</td>
                <td>${item.mainStore||'' }</td>
                <td>${item.cremationStore||'' }</td>
                <td></td>
                <td>${item.xueLingStore||'' }</td>
                <td>${item.totalNumber||'' }</td>
            </tr>
          `
          }else{
            tbody+=`
            <tr>
                <td style="padding:5px 0;">${index+1}</td>

                <td>${item.itemName || ''}</td>
                <td>${item.itemUnit||'' }</td>
                <td>${item.itemPrice||'' }</td>
                <td>${item.mainStore||'' }</td>
                <td>${item.cremationStore||'' }</td>
                <td></td>
                <td>${item.xueLingStore||'' }</td>
                <td>${item.totalNumber||'' }</td>
            </tr>
          `
          }

        })
        html+=`
        <div style="width:100%;height:100%;padding:0 10px;box-sizing: border-box;">
        <p style="font-size: 20px;text-align:center;line-height:30px;box-sizing: border-box;">${goodName}</p>

        <table border='1' style='border-collapse: collapse;text-align:center;width: 100%;font-size:12px'>
            <thead>
            <tr style="font-size:14px">
                <th style="padding:0 5px;" rowspan="2">序号</th>
                <th rowspan="2">供应商</th>
                <th rowspan="2">名称</th>
                <th rowspan="2">单位</th>
                <th rowspan="2">售价</th>
                <th rowspan="2">总仓</th>
                <th colspan="2">火化小仓</th>
                <th rowspan="2">薛岭仓</th>
                <th rowspan="2">合计</th>
            </tr>
            <tr style="font-size:14px">
                <th>盘点数</th>
                <th>扣30日销售未出库</th>
            </tr>

            </thead>
            <tbody>
            ${tbody}
            </tbody>
        </table>
    </div>


            `
      }else{
        console.log(this.tableData1,'555')
        //纸棺
        goodName=`${printDate}纸棺盘点表`
        this.tableData1.forEach((item,index)=>{
          console.log(item.rowspan)
          if(item.rowspan){

             tbody+=`
            <tr>
                <td style="padding:5px 0;">${index+1}</td>
                <td style="padding:0 5px;" rowspan="${item.rowspan}">${item.supplierName || ''}</td>
                <td>${item.financialCode || ''}</td>
                <td>${item.itemName||'' }</td>
                <td>${item.itemUnit||'' }</td>
                <td>${item.inPrice ||''}</td>
                <td>${item.itemPrice ||'' }</td>
                <td>${item.retailStore ||'' }</td>
                <td>${item.coldStore  ||''}</td>
                <td></td>
                <td>${item.carStore ||''}</td>
                <td></td>
                <td>${item.totalNumber ||''}</td>
            </tr>

          `
          }else{
             tbody+=`
            <tr>
                <td style="padding:5px 0;">${index+1}</td>

                <td>${item.financialCode || ''}</td>
                <td>${item.itemName||'' }</td>
                <td>${item.itemUnit||'' }</td>
                <td>${item.inPrice ||''}</td>
                <td>${item.itemPrice ||'' }</td>
                <td>${item.retailStore ||'' }</td>
                <td>${item.coldStore  ||''}</td>
                <td></td>
                <td>${item.carStore ||''}</td>
                <td></td>
                 <td>${item.totalNumber ||''}</td>
            </tr>

          `
          }

        })

        html+=`
        <div style="width:100%;height:100%;padding:0 10px;box-sizing: border-box;">
        <p style="font-size: 20px;text-align:center;line-height:30px;box-sizing: border-box;">${goodName}</p>

        <table border='1' style='border-collapse: collapse;text-align:center;width: 100%;font-size:12px'>
           <thead>
            <tr style="font-size:14px">
                <th style="padding:0 5px;" rowspan="2">序号</th>
                <th rowspan="2">供应商</th>
                <th rowspan="2">财务编码</th>
                <th rowspan="2">名称</th>
                <th rowspan="2">单位</th>
                <th rowspan="2">进价</th>
                <th rowspan="2">售价</th>
                <th rowspan="2">零售仓</th>
                <th colspan="2">防腐整容组仓</th>
                <th colspan="2">收殓组仓</th>
                <th rowspan="2">合计</th>
            </tr>
            <tr style="font-size:14px">
                <th>盘点数</th>
                <th>扣30日销售未出库</th>
                <th>盘点数</th>
                <th>扣30日销售未出库</th>
            </tr>

            </thead>
            <tbody>
             ${tbody}
            </tbody>
        </table>
    </div>
    `
      }



      LODOP.SET_PRINT_PAGESIZE(1,"210mm","297mm" ,"")
      // LODOP.SET_SHOW_MODE("LANDSCAPE_DEFROTATED",1);
      LODOP.ADD_PRINT_HTM(0, 0, "100%", "100%", html);

      LODOP.PREVIEW();
    },

完整代码

<template>
<!-- 库存盘点表 -->
  <div class="inventoryCounting stock-wrap h100" v-loading="loading">
    <div class="PageContent">
      <div  class="PageItem ">
        <el-row class="btn-wrap fileSearch">
          <el-form :inline="true" :model="ruleForm" label-width="80px" class="checkForm">
              <el-form-item label="物品类型:">
              <el-select
                class="check_input"
                v-model="ruleForm.itemType"
                placeholder=""
                @change="changeType"
              >
                <el-option v-for="item in types" :key='item.value' :label="item.label" :value='item.value'></el-option>

              </el-select>
            </el-form-item>
             <el-form-item label="月份:">
               <el-date-picker
                  v-model="ruleForm.queryDate"
                  type="month"
                  :clearable="false"
                  placeholder="选择月">
                </el-date-picker>
             </el-form-item>
            <el-button size="mini" type="primary" @click="onSubmit()">查询</el-button>
            <el-button size="mini" type="primary" @click="exportExcel()">导出</el-button>
            <el-button size="mini" type="primary" @click="printForm()">打印</el-button>
          </el-form>
        </el-row>
        <!-- 骨灰盒 -->
        <el-table
          key='tableData'
          v-if="ruleForm.itemType==0"
          :data="tableData"
           :span-method="objectSpanMethod"
          id='tableData'
          height="calc(100% - 40px)"
          :header-cell-style="{
            background: '#ccc',
            color: '#606266'
          }"
          stripe
          border
          ref="Table"
        >
         <el-table-column
            align="center"
            type="index"
            label="序号"
            >
          </el-table-column>
          <el-table-column
            align="center"
            prop="supplierName"
            label="供应商"

          >
          </el-table-column>

          <el-table-column
            prop="itemName"
            align="center"
            label="名称"

          >
          </el-table-column>
          <el-table-column
            prop="itemUnit"
            align="center"
            label="单位"

          >
          </el-table-column>
          <el-table-column
            prop="itemPrice"
            align="center"
            label="售价"

          >
          </el-table-column>
          <el-table-column
            prop="mainStore"
            align="center"
            label="总仓 "

          >
          </el-table-column>
          <el-table-column

            align="center"
            label="火化小仓"
            width="300px"
          >
          <el-table-column
            prop="cremationStore"
            align="center"
            label="盘点数 "
             width="80px"
          >
          </el-table-column>
          <el-table-column
            prop=""
            align="center"
            label="扣30日销售未出库 "

          >
          </el-table-column>
          </el-table-column>
          <el-table-column
            prop="xueLingStore"
            align="center"
            label="薛岭仓 "

          >
          </el-table-column>
          <el-table-column
            prop="totalNumber"
            align="center"
            label="合计 "

          >
          </el-table-column>

        </el-table>
          <!-- 纸棺 -->
        <el-table
          v-if="ruleForm.itemType==1"
          :data="tableData1"
          key='tableData1'
           id='tableData1'
            :span-method="objectSpanMethod"
          height="calc(100% - 40px)"
          :header-cell-style="{
            background: '#ccc',
            color: '#606266'
          }"
          stripe
          border
          ref="Table"
        >
         <el-table-column
            align="center"
            type="index"
            label="序号"
            >
          </el-table-column>
          <el-table-column
            align="center"
            prop="supplierName"
            label="供应商"
            width="100"
          >
          </el-table-column>
          <el-table-column
            align="center"
            prop="financialCode"
            label="财务编码"
             width="100"
          >
          </el-table-column>
          <el-table-column
            prop="itemName"
            align="center"
            label="名称"

          >
          </el-table-column>
          <el-table-column
            prop="itemUnit"
            align="center"
            label="单位"
            width="60"
          >
          </el-table-column>
          <el-table-column
            prop="inPrice"
            align="center"
            label="进价"
            width="60"

          >
          </el-table-column>
          <el-table-column
            prop="itemPrice"
            align="center"
            label="售价"
            width="60"

          >
          </el-table-column>
          <el-table-column
            prop="retailStore"
            align="center"
            label="零售仓"
            width="60"
          >
          </el-table-column>
          <el-table-column
            align="center"
            label="防腐整容组仓"
            width="300"
          >
            <el-table-column
              prop="coldStore"
              align="center"
              label="盘点数"
               width="80px"
            >
            </el-table-column>
            <el-table-column
              prop=""
              align="center"
              label="扣30日销售未出库"
            >
            </el-table-column>
          </el-table-column>
          <el-table-column
            align="center"
            label="收殓组仓"
            width="300px"
          >
            <el-table-column
              prop="carStore"
              align="center"
              label="盘点数 "
              width="80px"
            >
            </el-table-column>
            <el-table-column
              prop=""
              align="center"
              label="扣30日销售未出库 "

            >
            </el-table-column>
          </el-table-column>
          <el-table-column
            prop="totalNumber"
            align="center"
            label="合计 "
            width="60"
          >
          </el-table-column>

        </el-table>
        <!-- <p style="text-align: right; margin-top: 10px">
          <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="pager.currentPage"
            :page-size="pager.pageSize"
             :page-sizes="[20,30,40,50,60]"
            background
            layout="total,sizes, prev, pager, next, jumper"
            :total="pager.total"
          >
          </el-pagination>
        </p> -->
      </div>
    </div>
  </div>
</template>

<script>
import * as Type from "@/api/service";
import FileSaver from "file-saver";
import XLSX from "xlsx";
import { getLodop } from "@/utils/lodopFuncs";
export default {
  name: "inventoryCounting",
  data() {
    return {
       types:[{
        label:'骨灰盒',
        value:0
      },
      {
        label:'纸棺',
        value:1
      }],
      pager: {
        pageSize: 20,
        total: 0,
        currentPage: 1
      },
      ruleForm: {
       itemType:0,
       queryDate:new Date()
      },
      tableData: [], // 表单展示数据
      tableData1: [], // 表单展示数据
      spanArr:[],
      position:0
    };
  },
  created() {
    this.onSubmit();
  },

  methods: {
    //
    objectSpanMethod({ row, column, rowIndex, columnIndex }) {
        if (columnIndex === 1) {
                const _row = this.spanArr[rowIndex];
                const _col = _row > 0 ? 1 : 0;
                return {
                    rowspan: _row,
                    colspan: _col
                };
            }

    },
    //
     getSpanArr(data){
      data.forEach((item, index) => {
            if (index === 0) {
                this.spanArr.push(1);
                this.position = 0;

            } else {
                // 判断当前元素与上一个元素是否相同
                if (data[index].supplierName === data[index - 1].supplierName) {
                    this.spanArr[this.position] += 1;
                    this.spanArr.push(0);
                } else {
                    this.spanArr.push(1);
                    this.position = index;
                }
            }
        })
    },
     //打印
    printForm(){
      if(this.ruleForm.itemType == 0&&this.tableData.length==0) return this.$message('暂无数据打印');
      if(this.ruleForm.itemType == 1&&this.tableData1.length==0) return this.$message('暂无数据打印');
       let LODOP = getLodop();
      if (LODOP == null || !LODOP) {
        this.$.messager.alert(
          "系统提示",
          "您的浏览器不支持打印控件，请用IE重试或安装打印控件后重试"
        );
        return;
      }
      let printDate = this.$dayjs(this.ruleForm.queryDate).format("YYYY年MM月")
      let tbody=''
      let html =''
      let goodName=''


      if(this.ruleForm.itemType == 0){
        goodName=`${printDate}骨灰盒盘点表`
        //骨灰盒
         this.tableData.forEach((item,index)=>{
          if(item.rowspan){
            tbody+=`
            <tr>
                <td style="padding:5px 0;">${index+1}</td>
                <td style="padding:0 5px;" rowspan="${item.rowspan}">${item.supplierName || ''}</td>
                <td>${item.itemName || ''}</td>
                <td>${item.itemUnit||'' }</td>
                <td>${item.itemPrice||'' }</td>
                <td>${item.mainStore||'' }</td>
                <td>${item.cremationStore||'' }</td>
                <td></td>
                <td>${item.xueLingStore||'' }</td>
                <td>${item.totalNumber||'' }</td>
            </tr>
          `
          }else{
            tbody+=`
            <tr>
                <td style="padding:5px 0;">${index+1}</td>

                <td>${item.itemName || ''}</td>
                <td>${item.itemUnit||'' }</td>
                <td>${item.itemPrice||'' }</td>
                <td>${item.mainStore||'' }</td>
                <td>${item.cremationStore||'' }</td>
                <td></td>
                <td>${item.xueLingStore||'' }</td>
                <td>${item.totalNumber||'' }</td>
            </tr>
          `
          }

        })
        html+=`
        <div style="width:100%;height:100%;padding:0 10px;box-sizing: border-box;">
        <p style="font-size: 20px;text-align:center;line-height:30px;box-sizing: border-box;">${goodName}</p>

        <table border='1' style='border-collapse: collapse;text-align:center;width: 100%;font-size:12px'>
            <thead>
            <tr style="font-size:14px">
                <th style="padding:0 5px;" rowspan="2">序号</th>
                <th rowspan="2">供应商</th>
                <th rowspan="2">名称</th>
                <th rowspan="2">单位</th>
                <th rowspan="2">售价</th>
                <th rowspan="2">总仓</th>
                <th colspan="2">火化小仓</th>
                <th rowspan="2">薛岭仓</th>
                <th rowspan="2">合计</th>
            </tr>
            <tr style="font-size:14px">
                <th>盘点数</th>
                <th>扣30日销售未出库</th>
            </tr>

            </thead>
            <tbody>
            ${tbody}
            </tbody>
        </table>
    </div>


            `
      }else{
        console.log(this.tableData1,'555')
        //纸棺
        goodName=`${printDate}纸棺盘点表`
        this.tableData1.forEach((item,index)=>{
          console.log(item.rowspan)
          if(item.rowspan){

             tbody+=`
            <tr>
                <td style="padding:5px 0;">${index+1}</td>
                <td style="padding:0 5px;" rowspan="${item.rowspan}">${item.supplierName || ''}</td>
                <td>${item.financialCode || ''}</td>
                <td>${item.itemName||'' }</td>
                <td>${item.itemUnit||'' }</td>
                <td>${item.inPrice ||''}</td>
                <td>${item.itemPrice ||'' }</td>
                <td>${item.retailStore ||'' }</td>
                <td>${item.coldStore  ||''}</td>
                <td></td>
                <td>${item.carStore ||''}</td>
                <td></td>
                <td>${item.totalNumber ||''}</td>
            </tr>

          `
          }else{
             tbody+=`
            <tr>
                <td style="padding:5px 0;">${index+1}</td>

                <td>${item.financialCode || ''}</td>
                <td>${item.itemName||'' }</td>
                <td>${item.itemUnit||'' }</td>
                <td>${item.inPrice ||''}</td>
                <td>${item.itemPrice ||'' }</td>
                <td>${item.retailStore ||'' }</td>
                <td>${item.coldStore  ||''}</td>
                <td></td>
                <td>${item.carStore ||''}</td>
                <td></td>
                 <td>${item.totalNumber ||''}</td>
            </tr>

          `
          }

        })

        html+=`
        <div style="width:100%;height:100%;padding:0 10px;box-sizing: border-box;">
        <p style="font-size: 20px;text-align:center;line-height:30px;box-sizing: border-box;">${goodName}</p>

        <table border='1' style='border-collapse: collapse;text-align:center;width: 100%;font-size:12px'>
           <thead>
            <tr style="font-size:14px">
                <th style="padding:0 5px;" rowspan="2">序号</th>
                <th rowspan="2">供应商</th>
                <th rowspan="2">财务编码</th>
                <th rowspan="2">名称</th>
                <th rowspan="2">单位</th>
                <th rowspan="2">进价</th>
                <th rowspan="2">售价</th>
                <th rowspan="2">零售仓</th>
                <th colspan="2">防腐整容组仓</th>
                <th colspan="2">收殓组仓</th>
                <th rowspan="2">合计</th>
            </tr>
            <tr style="font-size:14px">
                <th>盘点数</th>
                <th>扣30日销售未出库</th>
                <th>盘点数</th>
                <th>扣30日销售未出库</th>
            </tr>

            </thead>
            <tbody>
             ${tbody}
            </tbody>
        </table>
    </div>
    `
      }



      LODOP.SET_PRINT_PAGESIZE(1,"210mm","297mm" ,"")
      // LODOP.SET_SHOW_MODE("LANDSCAPE_DEFROTATED",1);
      LODOP.ADD_PRINT_HTM(0, 0, "100%", "100%", html);

      LODOP.PREVIEW();
    },
    //导出
      exportExcel() {
      let xlsxParam = { raw: true };
      let name =''
      let time = this.$dayjs(this.ruleForm.queryDate).format("YYYY-MM")
      let  wb={}
      if(this.ruleForm.itemType==0){
        if( this.tableData.length==0) return this.$message('暂无数据导出')
        //骨灰盒
          wb= XLSX.utils.table_to_book(
         document.querySelector("#tableData"),
          xlsxParam
        );
        name='骨灰盒盘点表'

      }else{
        //纸棺
        if( this.tableData1.length==0) return this.$message('暂无数据导出')
          wb= XLSX.utils.table_to_book(
         document.querySelector("#tableData1"),
          xlsxParam
        );
        name='纸棺盘点表'
      }

      /* 从表生成工作簿对象 */

      /* 获取二进制字符串作为输出 */
      var wbout = XLSX.write(wb, {
        bookType: "xlsx",
        bookSST: true,
        type: "array",
      });
      try {
        FileSaver.saveAs(
          //Blob 对象表示一个不可变、原始数据的类文件对象。
          //Blob 表示的不一定是JavaScript原生格式的数据。
          //File 接口基于Blob，继承了 blob 的功能并将其扩展使其支持用户系统上的文件。
          //返回一个新创建的 Blob 对象，其内容由参数中给定的数组串联组成。
          new Blob([wbout], { type: "application/octet-stream" }),
          //设置导出文件名称
          `${name}${(new Date()).valueOf()}.xlsx`
        );
      } catch (e) {
        if (typeof console !== "undefined") console.log(e, wbout);
      }
      return wbout;
    },
    //改变物品类型
      changeType(){
        this.tableData=[];
        this.tableData1=[];
         this.spanArr=[]
         this.position=0
        // this.onSubmit()
      },
    //查询
    async onSubmit() {
        //避免多次点击样式错乱
        this.spanArr=[]
        this.position=0
      this.loading = true;
      let postData = {
       ...this.ruleForm,
       queryDate:this.$dayjs(this.ruleForm.queryDate).format("YYYY-MM")
      };
      //查询接口
      let res = await Type["listStockCheck"](postData)
       this.loading = false;
      if(res.code !==1) return this.$message.error(res.message)
      // this.tableData = res.data.list
      if(this.ruleForm.itemType==0){
        //骨灰盒
       this.getSpanArr(res.data)
       this.tableData = this.colspanMethod(res.data)
      }else{
        //纸棺
        this.getSpanArr(res.data)
        this.tableData1 = this.colspanMethod(res.data)

      }

    },
     // 合并行
      colspanMethod(dataList) {
        for (let i = 0; i < dataList.length; i++) {
          // 循环开始行
          let startRow
          // 需合并的行数
          let rowspan = 1
          // 循环到最后一行时
          if (i === dataList.length - 1) {
            // 如果最后一行和倒数第二行属性不同，则rowspan=1；否则直接结束循环
            if (dataList[i].supplierName !== dataList[i - 1].supplierName) {
              dataList[i].rowspan = rowspan
            }
            break
          }
          // 内层循环记录rowspan的数量
          for (let j = i; j < dataList.length - 1; j++) {
            // 记录循环结束的行数
            startRow = j
            // 属性相同则rowspan+1；否则直接结束内循环
            if (dataList[j].supplierName === dataList[j + 1].supplierName) {
              rowspan++
            } else {
              break
            }
          }
          // 为数组添加rowspan属性
          dataList[i].rowspan = rowspan
          // 控制外循环从内循环结束的行数开始
          i = startRow
        }

        return  dataList
      },
    // 初始页currentPage、初始每页数据数pagesize和数据data
    handleSizeChange(size) {
      this.pager.pageSize = size;
      this.onSubmit();
    },
    handleCurrentChange(currentPage) {
      this.pager.currentPage = currentPage;
      this.onSubmit(); //点击第几页
    }
  }
};
</script>

<style lang='scss' scoped>
/deep/ .el-form-item{
    margin-bottom: 10px!important;
    margin-right: 0!important;
  }
 /deep/ .el-select{
    .el-input{
      width:100%;
      min-width: 100%;
    }
  }
.tableGoods {
  width: 100%;
  display: flex;
  justify-content: space-between;
}
.table-left {
  width: 49%;
  height: 400px;
  overflow-y: auto;
  border: 1px solid #eee;
}
.table-right {
  width: 49%;
  height: 400px;
  overflow-y: auto;
  border: 1px solid #eee;
}
.inputAll {
  width: 58px;
  height: 25px;
  border: 1px solid #eee;
  border-radius: 5px;
  text-align: center;
}
.table_select_supplier {
  width: 148px;
}

.btn-wrap {
  display: flex;
  margin-bottom: 5px;
}

.demo-table-expand {
  font-size: 15px;
}

.demo-table-expand label {
  width: 90px;
  color: #99a9bf;
}

.demo-table-expand {
  padding: 20px;
}

.goods-btn {
  display: inline-block;
  width: 295px;
  text-align: right;
}

.purchase-title {
  font-size: 18px;
  color: #000000;
  font-weight: bold;
  padding: 20px 0;
}

.submit-wrap {
  width: 100%;
  text-align: center;
  margin-top: 30px;
}
</style>

38、image 图片预览切换错乱

 <el-image

                    v-for="(pic, index) in imgUrlList"

                    ref="previewImage"

                    :key="index"

                    :src="pic"

                    :preview-src-list="imgUrlList"

                    @click.capture="handlePreviewImage(index)"

              />

 handlePreviewImage(index) {

                    const imageViewerChild = this.$refs.previewImage[index].$children[0]

                    console.log(imageViewerChild)

                    // 重置图片缩放、旋转样式

                    imageViewerChild && imageViewerChild.reset()

                    // 每次点击 显示当前点击的图片

                    imageViewerChild && (imageViewerChild.index = index)

            }

39、按需加载Loading v-loading

import {
  Button,
  Message,
  Icon,
  Empty,
  Loading,
  Tooltip
} from 'element-ui';

Vue.use(Button).use(Icon).use(Empty).use(Tooltip)
Vue.use(Loading.directive);

 <div class="home" v-loading='loading'></div>

40、form 数组校验

<el-row class="PageInfo"><i class="info-bar"></i>联系人信息</el-row>
          <el-row v-for="(item,index)  in ruleForm.contacts" :key="index">
            <el-form-item label="联系人姓名"
             :prop="`contacts.${index}.contactName`"
              :rules="[
              {
                message:'请输入联系人姓名',
                trigger:'blur',
                required:true
              }]"
            >
              <el-input
                v-model="item.contactName"
                minlength="2"
                maxlength="50"

                placeholder="姓名"
              >
                <!-- <span
                  slot="append"
                  style="cursor: pointer"
                  @click="readDeadIdCard('familyMember')"
                  >读取</span
                > -->
              </el-input>
            </el-form-item>
            <el-form-item label="性别" label-width="50px">
              <el-select
                v-model="item.contactGenderCode"
                clearable
                placeholder="请选择性别"
                class="w150"
              >
                <el-option
                  v-for="item in dictionary.sex"
                  :key="item.dataCode"
                  :label="item.dataText"
                  :value="item.dataCode"
                  :disabled="item.disableState ? true:false"
                />
              </el-select>
            </el-form-item>
            <el-form-item label="证件类型" label-width="75px">
              <el-select
                v-model.number="item.contactCertificateTypeCode"
                placeholder="请选择证件类型"
                class="w150"

              >
                <el-option
                  v-for="item in dictionary.certificates"
                  :key="item.dataCode"
                  :label="item.dataText"
                  :value="item.dataCode"
                  :disabled="item.disableState ? true:false"
                />
              </el-select>
            </el-form-item>
            <el-form-item label="证件号码" label-width="75px">
              <el-input
                v-model="item.contactCertificateNo"
                maxlength="20"
                placeholder="请填写证件号码"
              ></el-input>
            </el-form-item>
            <el-form-item label="联系电话"  label-width="90px"
            :prop="`contacts.${index}.contactPhone`"
              :rules="[
              {
                message:'请填写联系电话',
                trigger:'blur',
                required:true
              }]">
              <el-input
                v-model="item.contactPhone"
                maxlength="50"
                placeholder="请填写联系电话"
              ></el-input>
            </el-form-item>
            <el-button type="primary" icon="el-icon-plus" circle @click="addContact(item,index)"></el-button>
            <el-button type="danger" icon="el-icon-minus" circle @click="delContact(item,index)"></el-button>
          </el-row>

//
    addContact(item,index){
      this.ruleForm.contacts.push({
        id:0,
          contactName:'',
          contactGenderCode:'',
          contactCertificateTypeCode:'',
          contactCertificateNo:'',
          contactPhone:''
      })
    },
    async delContact(item,index){
      if(item.id){
        //接口删除
        let res = await Type['deleteContact']({id:item.id})
        if(res.code!==1) return this.$message.error(res.message)
        this.$message.success(res.message);
        this.searchData()
      }else{

       this.ruleForm.contacts.splice(index,1)
      }
    },

41、点击按钮预览大图

<el-table-column    align='center' label="操作">
            <template slot-scope="scope">
              <el-button
                size="mini"
                @click="checkImg(scope.row)"
              >
              查看图片
              </el-button>

                <el-image-viewer
                  v-if="showViewer"
                  :on-close="closeViewer"
                  :url-list="srcList"
                />
              </template>
            </el-table-column>

 //变量
 showViewer:false,
      srcList: [
          'https://fuss10.elemecdn.com/8/27/f01c15bb73e1ef3793e64e6b7bbccjpeg.jpeg',
          'https://fuss10.elemecdn.com/1/8e/aeffeb4de74e2fde4bd74fc7b4486jpeg.jpeg'
        ],

//组件注册
 components: {
   
    'el-image-viewer': () => import('element-ui/packages/image/src/image-viewer')
  },

//方法
 checkImg(row){
      // this.srcList=row.imgsList;
      this.showViewer = true
    },
    closeViewer() {
      this.showViewer = false;
    },

42、table合计行不显示问题

getSummaries({ columns, data }) {
      this.$nextTick(() => {

        this.$refs.table.doLayout();

        });
      const sums = [];
      let sum = null;
      data.forEach((item) => {
        sum += item.itemNumber*item.itemPrice;
      });
      columns.forEach((column, index) => {
        if (index === 0) {
          sums[index] = "总计";
          return;
        }
        if (index === 5) {
          sums[index] = sum;
          return;
        }
      });
      //   sums[5] = sums[5].toFixed(2);
      return sums;
    },

43、table根据id合并相同行

 getSpanArr(data) {
        // data就是我们从后台拿到的数据
      for (var i = 0; i < data.length; i++) {
        if (i === 0) {
          this.spanArr.push(1);
          this.pos = 0;
        } else {
          // 判断当前元素与上一个元素是否相同
          if (data[i].id === data[i - 1].id) {
            this.spanArr[this.pos] += 1;
            this.spanArr.push(0);
          } else {
            this.spanArr.push(1);
            this.pos = i;
          }
        }
        console.log(this.spanArr);
      }
    },
    objectSpanMethod({ row, column, rowIndex, columnIndex }) {
       const _row = this.spanArr[rowIndex];
        const _col = _row > 0 ? 1 : 0;
        console.log(`rowspan:${_row} colspan:${_col}`);
        return {
          // [0,0] 表示这一行不显示， [2,1]表示行的合并数
          rowspan: _row,
          colspan: _col
        };
    },

44、el-form-item 动态lable

<el-form-item :label="`本次${actionType}量`">
    <el-input v-model="ruleForm.businessCode"></el-input>
 </el-form-item>

45、el-popover 使用

<el-popover
              placement="bottom"
              title=""
              width="200"
              trigger="hover"
              effect="dark"
            >
              <div>
                <span>当前场次：{{ hall1.previous || "" }}</span
                ><br />
                <span>下一场次：{{ hall1.next || "" }}</span>
              </div>
              <div
                slot="reference"
                class="box_item mini"
                @click="handleSelectHall(hall1)"
              >
                <img class="hall_img" src="@/assets/hall/small.png" alt="" />
                <div class="hall_name">{{ hall1.hallName }}</div>
              </div>
            </el-popover>

46、v-for循环+表单验证

 <el-form-item label="证件类型:"
            :prop="`deadList.${index}.deadCertificateTypeCode`"
            :rules="[
              {
                message: '请选择证件类型',
                trigger: 'change',
                required: true,
              },
            ]">
            <el-select
              v-model="item.deadCertificateTypeCode"
              clearable
              filterable
              placeholder="请选择证件类型"
              class="w220"
            >
              <el-option
                v-for="item in dictionary.certificates"
                :key="item.dataCode"
                :label="item.dataText"
                :value="item.dataCode"
              />
            </el-select>
          </el-form-item>

47、el-table 隐藏表头固定第一行

:show-header="false"

 /deep/ .el-table__row:nth-child(1){
    position: sticky;	//粘性定位
  		position: -webkit-sticky;
  		top: 0;
  		z-index: 3;
  }

GitHub 加速计划 / eleme / element

下载

A Vue.js 2.0 UI Toolkit for Web

最近提交(Master分支：4 个月前 )

c345bb45 8 个月前

a07f3a59 * Update transition.md * Update table.md * Update transition.md * Update table.md * Update transition.md * Update table.md * Update table.md * Update transition.md * Update popover.md 8 个月前

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开心就好1314520

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已为社区贡献4条内容

vue2 element使用笔记总结

开心就好1314520

1、 select组件，值改变，无法更改label值

2、el-tree组件文字超出容器不出现横向滚动条问题

3.组件绑定原生事件使用 .native 修饰符

4、时间选择器禁用日期通过 disabledDate 设置

5、表单手机号、身份证校验规则

6、upload图片上传2种方式

7.select input 表单校验是 赋值后仍提示校验不通过，需要在初始化时将该字段初始化上，并且如果绑定的值是Number类型，赋值成空字符串也会报错

8、input @input 事件 防抖函数 避免多次触发 （使用loadsh函数）

9.树形结构默认选中第一子项，展示数据

10、强制刷新

11、table 合计初始化不展示及设置高度

12、动态校验

13、上传

14、el-table 加loading效果，v-loading,分页disabled，table中图片加lazy；table 设置列为fixed后错位，fixed加上宽度，前一列不加宽度

15、控制table全选反选

16、表格固定列最后一行显示不全

17、输入框用正则限制但绑定值未更新

18、去除type="number"输入框聚焦时的上下箭头及type=number 输入中文，焦点上移

19、只校验表单其中一个字段

20、表格跨分页多选

21、表单不想显示label但又想显示必填星号怎么办 label=' '

22、el-tree 展开/收起所有节点

23、el-popover 位置偏移问题

24、el-dialog 的 destroy-on-close 属性设置无效

25、el-cascader 选择后需要点击空白处才能关闭

26、点击按钮使用图片查看器

27、时间选择器限制

28、表单提交刷新及input type 更改

29、el-upload 模拟点击

30、el-input 设置值后不能修改

31、Table 单行根据数据状态禁止选择

32、table 默认选中

33、 table fixed 错位

34、table 点击行变颜色、选中变颜色

35、table合并行

36、多个table切换 合并的表头样式变乱 1、v-show代替v-if 2、使用v-if 并且给el-table加不同的key

37、table合并单元格、切换 、打印、导出

表格导出

Clodop打印表格

完整代码

38、image 图片预览切换错乱

39、按需加载Loading v-loading

40、form 数组校验

41、点击按钮预览大图

42、table合计行不显示问题

43、table根据id合并相同行

44、el-form-item 动态lable

45、el-popover 使用

46、v-for循环+表单验证

47、el-table 隐藏表头固定第一行

所有评论(0)

开心就好1314520

3.组件绑定原生事件使用 `.native` 修饰符

4、时间选择器禁用日期通过 `disabledDate` 设置

7.select input 表单校验是赋值后仍提示校验不通过，需要在初始化时将该字段初始化上，并且如果绑定的值是Number类型，赋值成空字符串也会报错

8、input @input 事件防抖函数避免多次触发（使用loadsh函数）

18、去除type="number"输入框聚焦时的上下箭头及`type=number` 输入中文，焦点上移

36、多个table切换合并的表头样式变乱
1、v-show代替v-if
2、使用v-if 并且给el-table加不同的key

37、table合并单元格、切换、打印、导出