vue实现点击出现操作弹出框的示例

// 文件路径参考： src > views > demo> index.vue
<template>
 <div class="demo-wrapper">
  <div class="demo-div">
   <span>更多功能</span>
   <i class="xk-icon xk-ellipsis" @click.stop='showMenu($event)'></i> // 为了获取鼠标位置，这里把事件对象数据传递一下
  </div>
 </div>
</template>

<script lang="ts">
 import { Vue, Component, Prop, Watch} from "vue-property-decorator";
 @Component({

 })
 export default class articleView extends Vue {
  showMenu($event:any){
   // 点击时出现弹出框
  }
 };
</script>

// 文件路径参考： src > components > ActionList > index.vue<template>
 <ul class="menu-wrapper">
  <li
   class="menu-item"
   v-for="item in menu"
   :key="item"
   @click="handleClick(item)"
  >
   {{ item }}
  </li>
 </ul>
</template>

<script lang="ts">
import { Component, Prop, Vue } from 'vue-property-decorator';
@Component
export default class ActionList extends Vue {
 @Prop() menu: string[];
 handleClick(str: string) {
  this.$emit('click', str);
 }
}
</script>

// 文件路径参考： src > components > PublicModel > index.vue<template>
 <div class="dropdown-menu" :style="style" v-show='showModel'>
  <slot></slot>
 </div>
</template>

<script lang="ts">
import { Component, Prop, Vue } from 'vue-property-decorator';
interface IStyle {
 left?: string;
 right?: string;
 top?: string;
 bottom?: string;
}
@Component
export default class PublicModel extends Vue {
 showModel:boolean = false;
 style:IStyle = {};

 // 组件显示时
 handleOpen($event:any){
  const { clientWidth, clientHeight, scrollWidth, scrollHeight } = document.body || document.documentElement;
  const { pageX, pageY, clientX, clientY } = $event;
  let style:IStyle = {} 
  if(clientX > (clientWidth * 2)/3 ){
   style.right = scrollWidth - pageX + 10 + 'px';
  }else{
   style.left = pageX+10+'px'
  }
  if(clientY > (clientHeight * 2) / 3 ){
   style.bottom = scrollHeight - pageY + 10 + 'px';
  }else{
   style.top = pageY + 10 + "px"
  }
  this.style = style;
  this.showModel = true;
  document.addEventListener('mouseup',this.closeModel)
 }

 // 隐藏关闭此组件
 closeModel(){
  this.showModel = false;
  document.removeEventListener('mouseup', this.closeModel);
 }

 // 组件销毁生命周期
 destroyed(){
  document.removeEventListener('mouseup', this.closeModel);
 }
}
</script>

// 文件路径参考： src > components > PublicModel > index.ts
import Vue from 'vue';
import PublicModel from './index.vue'; // 导入上面所写的弹框组件
const throttleDebounce = require('throttle-debounce'); // throttle-debounce插件
const debounce = throttleDebounce.debounce;
const PublicModelConstructor = Vue.extend(PublicModel);
let instance:any;
const initInstance = () => {
 instance = new PublicModelConstructor({
  el: document.createElement('div'),
 });
 document.body.appendChild(instance.$el);
}
const insertInstanceSlot = (slotVNode:any, $event:any) => { // 这里两个参数一个是弹框里插槽的组件，还有就是点击的事件对象（方便定位弹框位置）
 if(!instance){
  initInstance()
 }
 instance.$slots.default = [slotVNode]; // 将传递过来的插槽组件插入弹框组件中
 instance.handleOpen($event) // 触发弹框组件（见上一段代码）的弹框获取定位信息并显示的事件
}
const ModelFun = debounce(200, false, insertInstanceSlot) // 使用throttle-debounce里的debounce保证在一系列调用时间中回调函数只执行一次，这里是200毫秒               // 第二个参数为false时，在点击时会在200毫秒后再执行callback（即insertInstanceSlot），但为true时，会立即先执行一次；
export default ModelFun

// 文件路径参考： src > components > PublicModel > index.tsimport Vue from 'vue';
import PublicModel from './index.vue'; // 导入上面所写的弹框组件
const throttleDebounce = require('throttle-debounce'); // throttle-debounce插件
const debounce = throttleDebounce.debounce;
const PublicModelConstructor = Vue.extend(PublicModel);
let instance:any;
const initInstance = () => {
 instance = new PublicModelConstructor({
  el: document.createElement('div'),
 });
 document.body.appendChild(instance.$el);
}
const insertInstanceSlot = (slotVNode:any, $event:any) => { // 这里两个参数一个是弹框里插槽的组件，还有就是点击的事件对象（方便定位弹框位置）
 if(!instance){
  initInstance()
 }
 instance.$slots.default = [slotVNode]; // 将传递过来的插槽组件插入弹框组件中
 instance.handleOpen($event) // 触发弹框组件（见上一段代码）的弹框获取定位信息并显示的事件
}
const ModelFun = debounce(200, false, insertInstanceSlot) // 使用throttle-debounce里的debounce保证在一系列调用时间中回调函数只执行一次，这里是200毫秒               // 第二个参数为false时，在点击时会在200毫秒后再执行callback（即insertInstanceSlot），但为true时，会立即先执行一次；export default ModelFun

// 文件路径参考： src > views > demo> index.vue<template>
 <div class="demo-wrapper">
  <div class="demo-div">
   <span>更多功能</span>
   <i class="xk-icon xk-ellipsis" @click.stop='showMenu($event)'></i>
  </div>
 </div>
</template>

<script lang="ts">
 import { Vue, Component, Prop, Watch} from "vue-property-decorator";
 import ActionList from "@/components/ActionList/index.vue";
 import modelFun from "@/components/PublicModel/index";
 @Component({

 })
 export default class articleView extends Vue {
  menuList: string[] = ['菜单1','菜单2','菜单3'];
  menuClick(name:string){ // 弹框里插槽的点击事件
   this.$message({message:name,type:'success'})
  }
  showMenu($event:any){
   modelFun(
    this.$createElement(
     ActionList,
     {
      props: { menu:this.menuList },
      on:{
       click: this.menuClick,
      }
     }
    ),
    $event
   )
  }
 };
</script>

<template>
 <div class="demo-wrapper">
  <el-tree
    :data="data"
   node-key="id"
    :default-expand-all="true"
   :expand-on-click-node="false"
   show-checkbox
   >
    <div class="custom-tree-node tree-item" iv slot-scope="{ node }">
     <span>{{ node.label }}</span>
     <span
      class="action"
      @click.stop="showMenu($event)"
     >
      <i class="el-icon-more"></i>
     </span>
    </div>
   </el-tree>
 </div>
</template>

<script lang="ts">
 import { Vue, Component, Prop, Watch} from "vue-property-decorator";
 import ActionList from "@/components/ActionList/index.vue";
 import modelFun from "@/components/PublicModel/index";
 @Component({

 })
 export default class articleView extends Vue {
  menuList: string[] = ['菜单1','菜单2','菜单3'];
  data:any[] = [{
  id: 1,
  label: '一级 1',
  children: [{
   id: 4,
   label: '二级 1-1',
   children: [{
   id: 9,
   label: '三级 1-1-1'
   }, {
   id: 10,
   label: '三级 1-1-2'
   }]
  }]
  }, {
  id: 2,
  label: '一级 2',
  children: [{
   id: 5,
   label: '二级 2-1'
  }, {
   id: 6,
   label: '二级 2-2'
  }]
  }, {
  id: 3,
  label: '一级 3',
  children: [{
   id: 7,
   label: '二级 3-1'
  }, {
   id: 8,
   label: '二级 3-2'
  }]
  }];
  menuClick(name:string){
   console.log(name)
   this.$message({message:name,type:'success'})
  }
  showMenu($event:any){
   modelFun(
    this.$createElement(
     ActionList,
     {
      props: { menu:this.menuList },
      on:{
       click: this.menuClick,
      }
     }
    ),
    $event
   )
  }
 };
</script>