有时需求涉及表头动态加载 ，肯定是涉及渲染了
 代码如：

cols: [
                { label: "节点编号", prop: "node", type: "normal" },
                { label: "名称", prop: "name", type: "normal" },
                { label: "类型", prop: "type", type: "sort" },
                { label: "坐标", prop: "coordinate", type: "normal" }
            ]

prop属性设定的值肯定是表头绑定的 属性，表格数据当然是以prop值作为绑定表格属性

<template>
    <div>
        <el-table class="tb-edit" highlight-current-row :data="tableData" style="width: 100%">

            <template v-for="(col ,index) in cols">
                <el-table-column v-if="col.type==='normal'" :prop="col.prop" :label="col.label"></el-table-column>
                <el-table-column v-if="col.type==='sort'" :prop="col.prop" sortable :label="col.label">
                    <template scope="scope">
                        <el-tag type="primary">{{ scope.row.type }}</el-tag>
                    </template>
                </el-table-column>
            </template>
        </el-table>
        <br>数据:{{tableData}}
    </div>
</template>
<script>
export default {
    data() {
        return {
            // cols prop属性值都是作为 tableData的属性
            cols: [
                { label: "节点编号", prop: "node", type: "normal" },
                { label: "名称", prop: "name", type: "normal" },
                { label: "类型", prop: "type", type: "sort" },
                { label: "坐标", prop: "coordinate", type: "normal" }
            ],
            tableData: [
                {
                    node: "0051",
                    name: " 机库顶",
                    type: "UWB",
                    status: "正常",
                    coordinate: "12.21,34.45,34.6"
                },
                {
                    node: "0061",
                    name: "机库门",
                    type: "GPS",
                    status: "低电",
                    coordinate: "45.41,67.45,78.6"
                }
            ]
        };
    },
    methods: {
        handleCurrentChange(row, event, column) {
            console.log(row, event, column, event.currentTarget);
        },
        handleEdit(index, row) {
            console.log(index, row);
        },
        handleDelete(index, row) {
            console.log(index, row);
        }
    }
};
</script>