vue+element UI实现树形表格

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.children && record.children.length > 0) {
      const children = treeToArray(record.children, expandAll, record, _level)
      tmp = tmp.concat(children)
    }
  })
  return tmp
}

index.vue:树形表格组件

<template>
  <el-table :data="formatData" :row-style="showRow" v-bind="$attrs">
    <el-table-column v-if="columns.length===0" width="150">
      <template slot-scope="scope">
        <span v-for="space in scope.row._level" :key="space" class="ms-tree-space"/>
        <span v-if="iconShow(0,scope.row)" class="tree-ctrl" @click="toggleExpanded(scope.$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",
  props: {
    /* eslint-disable */
    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
        ? Array.concat([tmp, this.expandAll], 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.children && record.children.length > 0;
    }
  }
};
</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"
        },
        {
          text: "时间线",
          value: "timeLine"
        },
        {
          text: "备注",
          value: "comment"
        }
      ],
      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"
                    }
                  ]
                }
              ]
            }
          ]
        }
      ]
    };
  },

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