<el-date-picker
              size="mini"
              v-model="date"
              type="week"
              :format="dateFormat"
              value-format="yyyy-MM-dd"
              @change="changeDateFormat"
              :picker-options="{ firstDayOfWeek: 1 }"
              placeholder="选择周">
            </el-date-picker>
          </el-form-item>

export default {
    name: "",
    data(){
      return{
        date:'',
        dateFormat:''
        
      }
    },
    methods : {
      changeDateFormat(val){
        
        let s = this.getMonday('s', 0, val)
        let e = this.getMonday('e', 0, val)
        this.dateFormat=s+'-'+e;

        let t=new Date(val).getTime() - 24 * 60 * 60 * 1000;
        let dd=new Date(t);
        var y = dd.getFullYear();
        var m = dd.getMonth() + 1;
        var d = dd.getDate();
        m = m < 10 ? "0" + m: m;
        d = d < 10 ? "0" + d: d;
        this.date = y + "-" + m + "-" + d ;

      },
      getMonday(type, dates,currentTime){
        var now = new Date(currentTime) || new Date();
        var nowTime = now.getTime();
        var day = now.getDay();
        var longTime = 24 * 60 * 60 * 1000;
        var n = longTime * 7 * (dates || 0);
        var dd ='';
        if (type == "s") {
          dd = nowTime - (day-1) * longTime + n;
        };
        if (type == "e") {
          dd = nowTime + (7 - day) * longTime + n;
        };
        dd = new Date(dd);
        var y = dd.getFullYear();
        var m = dd.getMonth() + 1;
        var d = dd.getDate();
        m = m < 10 ? "0" + m: m;
        d = d < 10 ? "0" + d: d;
        var day = y + "年" + m + "月" + d + "日";
        return day;
      },
      
    },
  }