vue+element UI实现树形表格

本文实例为大家分享了vue+element ui实现树形表格的具体代码，供大家参考，具体内容如下

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"
          }
         ]
        }
       ]
      }
     ]
    }
   ]
  };
 },

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。