vue-cli项目中使用公用的提示弹层tips或加载loadi

 <template>
  <div class="loading" v-show="loading">
  <img src="./loading.gif">
  </div>
 </template>
 <script>
 export default {
  name: 'loading',
  data() {
  return {
   loading: false
  }
  },
  created() {
  var that = this;
  this.bus.$on('loading', function (data) {
   that.loading = !!data;
  })
  }
 }
 </script>
 <style scoped lang="scss">
  .loading{
  display: flex;
  justify-content: center;
  flex-direction: column;
  align-items: center;
  position: fixed;
  left: 0;
  : 0;
  z-index: 999;
  width: 100 %;
  height: 100 %;
  color: #fff;
  background - color: rgba(0, 0, 0, 0.8);
  p {
   padding: .15rem .15rem .2rem;
   color: #fff;
   font-size: .16rem;
  }
  img {
   width: .4rem;
   height: .4rem;
  }
  }
 </style>

<template>
 <div id="app">
 <router-view/>
 <loading></loading> 
 </div>
</template>
<script>
 import tips from '@/ponents/mon/tips'
 import loading from '@/ponents/mon/loading'
 export default {
  name: 'App',
  ponents:{tips,loading}
 }
</script>

Vue.prototype.bus = new Vue;

// 显示loading
this.bus.$emit('loading', true);
// 关闭loading
this.bus.$emit('loading', false);

<template>
 <!-- 提示弹层 -->
 <div class="tips" v-show="tips.show">
 <h3>{{tips.title}}</h3> 
 </div>
</template>
<script>
 export default {
 name: 'tips',
 data (){
 return {
   // 可以根据实际情况写更复杂的弹层，根据情况扩充tips即可

  tips:{
  show:false,
  title:''
  }
 }
 },
 created () {
 this.bus.$on('tips',(data)=>{
  this.tips = data;
 })
 },
 watch:{
 // 检测tips变化，显示提示1.5s之后自动关闭，可根据实际情况自动修改时间

 tips:function(){
  if(this.tips.show){
  setTimeout( ()=>{
   this.tips.show = false;
  },1500)
  }
 }
 }
}
</script>
<style scoped lang="scss">
.tips{
 display: flex;
 justify-content: center;
 flex-direction: column;
 align-items: center;
 position: fixed;
 left: 0;
 : 0;
 z-index: 999;
 width: 100%;
 height: 100%;
 color: #fff;
 h3{
 padding: .1rem .2rem;
 font-size: 12px;
 line-height: 12px;
 background-color: rgba(0,0,0,0.8);
 border-radius: 4px;
 }
}
</style>

Vue.prototype.bus = new Vue;

this.bus.$emit('tips', { show: true, title: '我是标题'})