elementui tree组件自定义内容，实现移入label显示操作按钮

1.效果

2.实现

   <el-tree @node-click="showRuleBysort" :data="data" v-if="data != null" node-key="id" :expand-on-click-node="false"
        :props='{
          label: "groupName"
        }'>
        <div class="custom-tree-node" slot-scope="{ node, data }" @mouseleave="mouseleave(data, $event)"
          @mouseover="mouseover(data, $event)">
          <span>{{ node.label }}</span>
          <i class="el-icon-edit none" @click="editTree(data)"></i>
        </div>

      </el-tree>
//主要方法在于mouseleave和mouseover
    //树控件鼠标移出事件
    mouseleave(data, $event) {
      $event.currentTarget.firstElementChild.nextElementSibling.setAttribute(
        "class",
        "el-icon-edit none"
      );
    },
    //树控件鼠标移入事件
    mouseover(data, $event) {
      $event.currentTarget.firstElementChild.nextElementSibling.setAttribute(
        "class",
        "el-icon-edit  block"
      );
    },

//css
.left{ .none {
  display: none;
}
.block{
  display:block
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34