效果图

image.png

      // html
      <el-tree style="margin-top: 10px" :data="data" :props="defaultProps" @node-contextmenu="rightClick"></el-tree>
      <div  id="menu" v-show="menuVisible" @mouseleave="menuVisible=!menuVisible">
        <el-card class="box-card">
          <div class="text item">
            <el-link icon="el-icon-circle-plus-outline" :underline="false">添加</el-link>
          </div>
          <div class="text item">
            <el-link icon="el-icon-remove-outline" :underline="false">删除</el-link>  </div>
        </el-card>
      </div>

// data
data(){
  return {
      menuVisible:false,
      data: [{
        label: '一级 1',
        children: [{
          label: '二级 1-1',
          children: [{
            label: '三级 1-1-1'
          }]
        }]
      }, {
        label: '一级 2',
        children: [{
          label: '二级 2-1',
          children: [{
            label: '三级 2-1-1'
          }]
        }, {
          label: '二级 2-2',
          children: [{
            label: '三级 2-2-1'
          }]
        }]
      }, {
        label: '一级 3',
        children: [{
          label: '二级 3-1',
          children: [{
            label: '三级 3-1-1'
          }]
        }, {
          label: '二级 3-2',
          children: [{
            label: '三级 3-2-1'
          }]
        }]
      }],
      defaultProps: {
        children: 'children',
        label: 'label'
      }
    }
}

methods:{
    // 右键压下
    rightClick(MouseEvent, object, Node, element) {
      console.log(Node)
      this.nodeData = Node
      this.menuVisible = true;
      let menu = document.querySelector("#menu");
      menu.style.cssText = "position: fixed; left: " + (MouseEvent.clientX - 10) + 'px' + "; top: " + (MouseEvent.clientY - 25) + 'px; z-index: 999; cursor:pointer;';
    },
}