element el-table表格的二次封装实现(附表格高度自适应)

 <template>
  <el-table
   :data="tableData"
   style="width: 100%">
   <el-table-column
    prop="date"
    label="日期"
    width="180">
   </el-table-column>
   <el-table-column
    prop="name"
    label="姓名"
    width="180">
   </el-table-column>
   <el-table-column
    prop="address"
    label="地址">
   </el-table-column>
  </el-table>
 </template>
 <script>
  export default {
   data() {
    return {
     tableData: [{
      date: '2016-05-02',
      name: '王小虎',
      address: '上海市普陀区金沙江路 1518 弄'
     }, {
      date: '2016-05-04',
      name: '王小虎',
      address: '上海市普陀区金沙江路 1517 弄'
     }, {
      date: '2016-05-01',
      name: '王小虎',
      address: '上海市普陀区金沙江路 1519 弄'
     }, {
      date: '2016-05-03',
      name: '王小虎',
      address: '上海市普陀区金沙江路 1516 弄'
     }]
    }
   }
  }
 </script>

<template>
 <el-table :data="tableData" style="width: 100%">
  <template v-for="(item, key) in header">
   <el-table-column
    :key="key"
    :prop="itm.prop ? itm.prop : null"
    :label="itm.label ? itm.label : null"
    :width="itm.width ? itm.width : null"
   >
   </el-table-column>
  </template>
 </el-table>
</template>
<script>
export default {
 data() {
  return {
   header: [
    { prop: "date", label: "日期", width: "180" },
    { prop: "name", label: "姓名", width: "180" },
    { prop: "address", label: "地址" }
   ],
   tableData: [
    {
     date: "2016-05-02",
     name: "王小虎",
     address: "上海市普陀区金沙江路 1518 弄"
    },
    {
     date: "2016-05-04",
     name: "王小虎",
     address: "上海市普陀区金沙江路 1517 弄"
    },
    {
     date: "2016-05-01",
     name: "王小虎",
     address: "上海市普陀区金沙江路 1519 弄"
    },
    {
     date: "2016-05-03",
     name: "王小虎",
     address: "上海市普陀区金沙江路 1516 弄"
    }
   ]
  };
 }
};
</script>

<template>
 <el-table
  empty-text="暂无数据"
  ref="table"
  :data="tableList"
  border
  stripe
  fit
  highlight-current-row
  :height="inTableHeight"
  @selection-change="selectionChange"
  @row-click="rowClick"
 >
  <!-- 选择框 -->
  <el-table-column
   v-if="select"
   type="selection"
   fixed="left"
   width="55"
   align="center"
  />
  <template v-for="(itm, idx) in header">
   <!-- 特殊处理列 -->
   <el-table-column
    v-if="itm.render"
    :key="idx"
    :prop="itm.prop ? itm.prop : null"
    :label="itm.label ? itm.label : null"
    :width="itm.width ? itm.width : null"
    :sortable="itm.sortable ? itm.sortable : false"
    :align="itm.align ? itm.align : 'center'"
    :fixed="itm.fixed ? itm.fixed : null"
    :show-overflow-tooltip="itm.tooltip"
    min-width="50"
   >
    <template slot-scope="scope">
     <ex-slot
      :render="itm.render"
      :row="scope.row"
      :index="scope.$index"
      :column="itm"
     />
    </template>
   </el-table-column>
   <!-- 正常列 -->
   <el-table-column
    v-else
    :key="idx"
    :prop="itm.prop ? itm.prop : null"
    :label="itm.label ? itm.label : null"
    :width="itm.width ? itm.width : null"
    :sortable="itm.sortable ? itm.sortable : false"
    :align="itm.align ? itm.align : 'center'"
    :fixed="itm.fixed ? itm.fixed : null"
    :formatter="itm.formatter"
    :show-overflow-tooltip="itm.tooltip"
    min-width="50"
   />
  </template>
 </el-table>
</template>
<script>
// 自定义内容的组件
var exSlot = {
 functional: true,
 props: {
  row: Object,
  render: Function,
  index: Number,
  column: {
   type: Object,
   default: null
  }
 },
 render: (h, context) => {
  const params = {
   row: context.props.row,
   index: context.props.index
  };
  if (context.props.column) params.column = context.props.column;
  return context.props.render(h, params);
 }
};
export default {
 components: { exSlot },
 props: {
  tableList: {
   type: Array,
   default: () => []
  },
  header: {
   type: Array,
   default: () => []
  },
  select: {
   type: Boolean,
   default: () => false
  },
  height: {
   type: [Number, String, Function],
   default: () => null
  }
 },
 data() {
  return {
   inTableHeight: null
  };
 },
 created() {
  //该阶段可以接收父组件的传递参数
  this.inTableHeight = this.height;
 },
 mounted() {
  this.$nextTick(() => {
   //表格高度自适应浏览器大小
   this.changeTableHight();
   if (!this.height) {
    window.onresize = () => {
     this.changeTableHight();
    };
   }
  });
 },
 destroyed() {
  //高度自适应事件注销
  window.onresize = null;
 },
 watch: {
  /**
   * 数据变化后 高度自适应
   */
  tableList() {
   this.$nextTick(() => {
    this.changeTableHight();
   });
  }
 },
 methods: {
  /**
   * 选择框选择后更改,事件分发
   */
  selectionChange(selection) {
   this.$emit("selection-change", selection);
  },
  /**
   * 点击事件
   */
  rowClick(row, column, event) {
   this.$emit("row-click", row, column, event);
  },
  /**
   * 高度自适应
   * 当表格展示空间小于460按460px展示，大于的时候高度填充
   */
  changeTableHight() {
   if (this.height) {
    //如果有传进来高度就取消自适应
    this.inTableHeight = this.height;
    this.$refs.table.doLayout();
    return;
   }
   let tableHeight = window.innerHeight || document.body.clientHeight;
   //高度设置
   let disTop = this.$refs.table.$el;
   //如果表格上方有元素则减去这些高度适应窗口，66是底下留白部分
   tableHeight -= disTop.offsetTop + 66;
   if (disTop.offsetParent) tableHeight -= disTop.offsetParent.offsetTop;
   this.inTableHeight = tableHeight < 460 ? 460 : tableHeight;
   //重绘表格
   this.$refs.table.doLayout();
  }
 }
};
</script>
<style></style>

<template>
 <div class="hello">
  <xd-table :table-list="tableData" :header="header" height="300"></xd-table>
 </div>
</template>
<script>
export default {
 name: "HelloWorld",
 data() {
  return {
   header: [
    { prop: "w", label: "w" },
    { prop: "x", label: "x",
     formatter: (row) => {
      return row.x.toFixed(3);
     },
    },
    { prop: "d", label: "d",
     formatter: (row) => {
      return row.d.toFixed(2);
     },
    },
    {
     label: "操作",
     render: (h, data) => {
      return (
       <el-button
        type="primary"
        onClick={() => {
         this.handleClick(data.row);
        }}
       >
        点我获取行数据
       </el-button>
      );
     },
    },
   ],
   tableData: [
    { w: 1, x: 99.25123, d: 0.23892 },
    { w: 1, x: 255.6666, d: 0.99134 },
   ],
  };
 },
 methods: {
  handleClick(row) {
   console.log(row);
  },
 },
};
</script>