1. HTML 关键代码

      <div class="mb-6">
        <div class="flex gap-6 align-items-center mb-6">
          <span>接口头部信息</span>
          <el-button :icon="Plus" circle class="ml-3" @click="addHeaderRow" />
        </div>
        <div class="flex gap-6 mb-3 header-wrap" v-for="(item, index) in state.editForm.header" :key="index">
          <el-form-item prop="key">
            <el-input v-model="item.key" placeholder="key"></el-input>
          </el-form-item>
          <el-form-item prop="value">
            <el-input v-model="item.value" placeholder="value"></el-input>
          </el-form-item>
          <el-button :icon="Close" circle @click="deleteHeaderRow(index)" />
        </div>
      </div>

2. TS 关键代码

const state = reactive({
 editForm: {
 	...
    header: [],
  },
})

// 点击加号:添加一行header
const addHeaderRow = () => {
  state.editForm.header.push({ key: '', value: '' });
};

// 点击减号:删除一行header
const deleteHeaderRow = (index: number) => {
  state.editForm.header.splice(index, 1);
};