schangxiang@126.com
2025-09-10 3d43ffa3152110b7823f9fa6320c08a6ae02358a
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<template>
  <div class="app-container">
 
    <div class="filter-container">
      <el-checkbox-group v-model="checkboxVal">
        <el-checkbox label="apple">apple</el-checkbox>
        <el-checkbox label="banana">banana</el-checkbox>
        <el-checkbox label="orange">orange</el-checkbox>
      </el-checkbox-group>
    </div>
 
    <el-table :data="tableData" :key="key" border fit highlight-current-row style="width: 100%">
      <el-table-column prop="name" label="fruitName" width="180"/>
      <el-table-column v-for="fruit in formThead" :key="fruit" :label="fruit">
        <template slot-scope="scope">
          {{ scope.row[fruit] }}
        </template>
      </el-table-column>
    </el-table>
 
  </div>
</template>
 
<script>
const defaultFormThead = ["apple", "banana"];
 
export default {
  data() {
    return {
      tableData: [
        {
          name: "fruit-1",
          apple: "apple-10",
          banana: "banana-10",
          orange: "orange-10"
        },
        {
          name: "fruit-2",
          apple: "apple-20",
          banana: "banana-20",
          orange: "orange-20"
        }
      ],
      key: 1, //  table key
      formTheadOptions: ["apple", "banana", "orange"],
      checkboxVal: defaultFormThead, //  checkboxVal
      formThead: defaultFormThead //  默认表头 Default header
    };
  },
  watch: {
    checkboxVal(valArr) {
      this.formThead = this.formTheadOptions.filter(i => valArr.indexOf(i) >= 0);
      this.key = this.key + 1;//  为了保证table 每次都会重渲 In order to ensure the table will be re-rendered each time
    }
  }
};
</script>