VUE2/3:element ui table表格的显隐列（若依框架）_elementui表格隐藏列

若依框架自带一个组件，封装了关于表格，展示和隐藏表格列的功能；

使用效果就是这样的，在表格上面，三个框，从左到右分别是隐藏上面搜索，刷新列表，和显隐列的功能；

 一、下面的代码放到RightToolbar/index.vue下，

<template>
  <div class="top-right-btn" :style="style">
    <el-row>
      <el-tooltip class="item" effect="dark" :content="showSearch ? '隐藏搜索' : '显示搜索'" placement="top" v-if="search">
        <el-button circle icon="Search" @click="toggleSearch()" />
      </el-tooltip>
      <el-tooltip class="item" effect="dark" content="刷新" placement="top">
        <el-button circle icon="Refresh" @click="refresh()" />
      </el-tooltip>
      <el-tooltip class="item" effect="dark" content="显隐列" placement="top" v-if="columns">
        <el-button circle icon="Menu" @click="showColumn()" />
      </el-tooltip>
    </el-row>
    <el-dialog :title="title" v-model="open" append-to-body>
      <el-transfer
        :titles="['显示', '隐藏']"
        v-model="value"
        :data="columns"
        @change="dataChange"
      ></el-transfer>
    </el-dialog>
  </div>
</template>
 
<script setup>
const props = defineProps({
  showSearch: {
    type: Boolean,
    default: true,
  },
  columns: {
    type: Array,
  },
  search: {
    type: Boolean,
    default: true,
  },
  gutter: {
    type: Number,
    default: 10,
  },
})
 
const emits = defineEmits(['update:showSearch', 'queryTable']);
 
// 显隐数据
const value = ref([]);
// 弹出层标题
const title = ref("显示/隐藏");
// 是否显示弹出层
const open = ref(false);
 
const style = computed(() => {
  const ret = {};
  if (props.gutter) {
    ret.marginRight = `${props.gutter / 2}px`;
  }
  return ret;
});
 
// 搜索
function toggleSearch() {
  emits("update:showSearch", !props.showSearch);
}
 
// 刷新
function refresh() {
  emits("queryTable");
}
 
// 右侧列表元素变化
function dataChange(data) {
  for (let item in props.columns) {
    const key = props.columns[item].key;
    props.columns[item].visible = !data.includes(key);
  }
}
 
// 打开显隐列dialog
function showColumn() {
  open.value = true;
}
 
// 显隐列初始默认隐藏列
for (let item in props.columns) {
  if (props.columns[item].visible === false) {
    value.value.push(parseInt(item));
  }
}
</script>
 
<style lang='scss' scoped>
:deep(.el-transfer__button) {
  border-radius: 50%;
  display: block;
  margin-left: 0px;
}
:deep(.el-transfer__button:first-child) {
  margin-bottom: 10px;
}
 
.my-el-transfer {
  text-align: center;
}
</style>

二、main.js文件里封装

// 自定义表格工具组件
import RightToolbar from '@/components/RightToolbar'
 
 
app.component('RightToolbar', RightToolbar)

放到main.js全局挂载，使用的时候无须引入

三、具体代码

               <right-toolbar v-model:showSearch="showSearch" @queryTable="getList" :columns="columns"></right-toolbar>
<el-table v-loading="loading" :data="userList" @selection-change="handleSelectionChange">
               <el-table-column type="selection" width="50"   />
               <el-table-column label="用户编号"   key="userId" prop="userId" v-if="columns[0].visible" />
               <el-table-column label="用户名称"   key="userName" prop="userName" v-if="columns[1].visible" :show-overflow-tooltip="true" />
               <el-table-column label="用户昵称"   key="nickName" prop="nickName" v-if="columns[2].visible" :show-overflow-tooltip="true" />
               <el-table-column label="部门"   key="deptName" prop="dept.deptName" v-if="columns[3].visible" :show-overflow-tooltip="true" />
               <el-table-column label="手机号码"   key="phonenumber" prop="phonenumber" v-if="columns[4].visible" width="120" />
               <el-table-column label="状态"   key="status" v-if="columns[5].visible">
              
               </el-table-column>
               <el-table-column label="创建时间"   prop="createTime" v-if="columns[6].visible" width="160">
                  
               </el-table-column>
      
            </el-table>

 下面是一页中必须有的，showSearch要定义，是控制表单是否显示的

columns也是必须有的，把表格的每一项按顺序写，表格里每一项需要控制的要写v-if="columns[0].visible"  0就是key值

const showSearch = ref(true);
// 列显隐信息
const columns = ref([
  { key: 0, label: `用户编号`, visible: true },
  { key: 1, label: `用户名称`, visible: true },
  { key: 2, label: `用户昵称`, visible: true },
  { key: 3, label: `部门`, visible: true },
  { key: 4, label: `手机号码`, visible: true },
  { key: 5, label: `状态`, visible: true },
  { key: 6, label: `创建时间`, visible: true }
]);
/** 查询用户列表 */
function getList() {
  loading.value = true;
  listUser(proxy.addDateRange(queryParams.value, dateRange.value)).then(res => {
    loading.value = false;
    userList.value = res.rows;
    total.value = res.total;
  });
};

四、效果展示