一：在component文件夹下新建如下treeTable文件夹，里面有2个文件：

eval.js:将数据转换成树形数据

/** * @Author: jianglei * @Date: 2017-10-12 12:06:49 */"use strict";import Vue from "vue";export default function treeToArray( data, expandAll, parent = null, level = null) { let tmp = []; Array.from(data).forEach(function(record) { if (record._expanded === undefined) { Vue.set(record, "_expanded", expandAll); } let _level = 1; if (level !== undefined && level !== null) { _level = level + 1; } Vue.set(record, "_level", _level); // 如果有父元素 if (parent) { Vue.set(record, "parent", parent); } tmp.push(record); if (record.child && record.child.length > 0) { const child = treeToArray(record.child, expandAll, record, _level); tmp = tmp.concat(child); } }); return tmp;}

index.vue:树形表格组件

<template> <el-table ref="multipleTable" :data="formatData" :row-style="showRow" v-bind="$attrs"> <!-- @header-click="chooseall" --> <el-table-column :render-header="renderHeader" width="50" align="center"> <template slot-scope="scope"> <el-checkbox v-model="scope.row.checks" @change="toselect(scope.row)"></el-checkbox> </template> </el-table-column> <el-table-column v-if="columns.length===0" width="150"> <template slot-scope="scope"> <span v-for="space in scope.row._level" :key="space" class="ms-tree-space"/> <span v-if="iconShow(0,scope.row)" class="tree-ctrl" @click="toggleExpanded(scope.$index)"> <i v-if="!scope.row._expanded" class="el-icon-plus"/> <i v-else class="el-icon-minus"/> </span> {{ scope.$index }} </template> </el-table-column> <el-table-column v-for="(column, index) in columns" v-else :key="column.value" :label="column.text" :width="column.width"> <template slot-scope="scope"> <!-- Todo --> <!-- eslint-disable-next-line vue/no-confusing-v-for-v-if --> <span v-for="space in scope.row._level" v-if="index === 0" :key="space" class="ms-tree-space"/> <span v-if="iconShow(index,scope.row)" class="tree-ctrl" @click="toggleExpanded(scope.$index)"> <i v-if="!scope.row._expanded" class="el-icon-plus"/> <i v-else class="el-icon-minus"/> </span> {{ scope.row[column.value] }} </template> </el-table-column> <slot/> </el-table></template> <script>/** Auth: Lei.j1ang Created: 2018/1/19-13:59*/import treeToArray from "./eval";export default { name: "TreeTable", data() { return { chooseson: true, //全选 key: true //单个点击直到全部选中 }; }, props: { data: { type: [Array, Object], required: true }, columns: { type: Array, default: () => [] }, evalFunc: Function, evalArgs: Array, expandAll: { type: Boolean, default: false } }, computed: { // 格式化数据源 formatData: function() { let tmp; if (!Array.isArray(this.data)) { tmp = [this.data]; } else { tmp = this.data; } const func = this.evalFunc || treeToArray; const args = this.evalArgs ? [tmp, this.expandAll].concat(this.evalArgs) : [tmp, this.expandAll]; return func.apply(null, args); } }, methods: { showRow: function(row) { const show = row.row.parent ? row.row.parent._expanded && row.row.parent._show : true; row.row._show = show; return show ? "animation:treeTableShow 1s;-webkit-animation:treeTableShow 1s;" : "display:none;"; }, // 切换下级是否展开 toggleExpanded: function(trIndex) { const record = this.formatData[trIndex]; record._expanded = !record._expanded; }, // 图标显示 iconShow(index, record) { return index === 0 && record.child && record.child.length > 0; }, //设置表头全选 renderHeader(h, data) { return h("span", [ h("input", { attrs: { id: "chooseall", type: "checkbox", style: "border: 1px solid #dcdfe6;border-radius: 2px;box-sizing: border-box;width: 14px;height: 14px;background-color: #fff;" } }) ]); }, //功能函数:选中部分子集 setchildtobeselect(arr, key) { arr.forEach((v, i) => { v.checks = key; // v._expanded = key;//选中后展开子项 if (v.child) { this.setchildtobeselect(v.child, v.checks); } }); }, //是否所有的都被选中 isallchecked(arr) { arr.forEach((v, i) => { if (!v.checks) { this.key = false; } if (v.child) { this.isallchecked(v.child); } }); }, //设置父级为 未选中状态（父级的父级没改变-有bug） setparentfalse(arr, id, level) { arr.forEach((v, i) => { if (v._level == level - 1 && v.child) { v.child.forEach((val, ind) => { if (val.id == id) { v.checks = false; return false; //终止此次循环，减少循环次数 } }); } if (v.child) { this.setparentfalse(v.child, id, level); } }); }, //设置父级为 选中状态 setparenttrue(arr, id, level) { arr.forEach((v, i) => { if (v._level == level - 1 && v.child) { let key = true; let sameidkey = false; v.child.forEach((val, ind) => { if (val.id == id) { //确保当前点击的在该父级内 sameidkey = true; } if (!val.checks) { key = false; } }); if (key && sameidkey) { v.checks = true; } } if (v.child) { this.setparentfalse(v.child, id, level); } }); }, //某个复选框被点击时 toselect(row) { console.log(row); // row._expanded = row.checks;//选中后是否展开 //1、若有子集先让子选中 if (row.child) { this.setchildtobeselect(row.child, row.checks); } //2、然后判断是否全选中 this.key = true; //重置为true，防止上次已经是false的状态 this.isallchecked(this.formatData); //3、设置多选框的状态 if (!row.checks) { this.setparentfalse(this.formatData, row.id, row._level); //设置父级选中的状态为false document.getElementById("chooseall").checked = false; //设置全选框的状态 } else { this.setparenttrue(this.formatData, row.id, row._level); //设置父级选中的状态为true } if (this.key) { document.getElementById("chooseall").checked = true; //设置全选框的状态 } } }, mounted() { this.$nextTick(() => { var that = this; const all = document.getElementById("chooseall"); all.onchange = function(e) { console.log(all.checked); if (all.checked == true) { that.setchildtobeselect(that.formatData, true); } else { that.setchildtobeselect(that.formatData, false); } }; }); }};</script><style rel="stylesheet/css">@keyframes treeTableShow { from { opacity: 0; } to { opacity: 1; }}@-webkit-keyframes treeTableShow { from { opacity: 0; } to { opacity: 1; }}</style> <style scoped>.ms-tree-space { position: relative; top: 1px; display: inline-block; font-style: normal; font-weight: 400; line-height: 1; width: 18px; height: 14px;}.ms-tree-space::before { content: "";}.processContainer { width: 100%; height: 100%;}table td { line-height: 26px;}.tree-ctrl { position: relative; cursor: pointer; color: #2196f3; margin-left: -18px;}</style>

二：在需要的地方引入该组件：

例如：在component文件夹下新建a.vue:

<tree-table :data="data" :columns="columns" border/>import treeTable from "./TreeTable";components: { treeTable },data() { return { columns: [ { text: "事件", value: "event", width: 200 }, { text: "ID", value: "id" } ], data: [ { id: 0, event: "事件1", timeLine: 50, comment: "无" }, { id: 1, event: "事件1", timeLine: 100, comment: "无", children: [ { id: 2, event: "事件2", timeLine: 10, comment: "无" }, { id: 3, event: "事件3", timeLine: 90, comment: "无", children: [ { id: 4, event: "事件4", timeLine: 5, comment: "无" }, { id: 5, event: "事件5", timeLine: 10, comment: "无" }, { id: 6, event: "事件6", timeLine: 75, comment: "无", children: [ { id: 7, event: "事件7", timeLine: 50, comment: "无", children: [ { id: 71, event: "事件71", timeLine: 25, comment: "xx" }, { id: 72, event: "事件72", timeLine: 5, comment: "xx" }, { id: 73, event: "事件73", timeLine: 20, comment: "xx" } ] }, { id: 8, event: "事件8", timeLine: 25, comment: "无" } ] } ] } ] } ] }; },

最终效果：

这样就大工告成了，想要了解更多，可以关注vue-element-admin，一个很不错的后台管理模版

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