イベントバスを使用して Vue コンポーネント間で値を渡す方法の詳細な説明

<template> 
  <p class="transimission1"> 
  <button @click="get">点击发送数值到eventbus中</button>  
  </p> 
   
</template> 
 
<script> 
  export default { 
    name: "transimission1", 
    methods: { 
      get: function() { 
        console.log("Aaa"); 
        eventBus.$emit(&#39;eventBusName&#39;, "hellokugou"); 
      } 
    }, 
  } 
</script> 
 
<style> 
 
</style>

<template> 
  <p class="transimissiontwo"> 
    <button @click="method1">点击console.log出eventbus的信息 
</button> 
  </p> 
</template> 
 
<script> 
  export default { 
    name: "transimissiontwo", 
    methods: { 
      method1: function() { 
        //使用on老监听事件 
        eventBus.$on(&#39;eventBusName&#39;, function(val) {　 
          console.log("这个是用transimissiontwo的val值为："+val) 
        }) 
      } 
    } 
  } 
</script> 
<style> 
 
</style>

<template> 
  <p id="app"> 
    <click></click> 
  <transimissiontwo></transimissiontwo> 
    <transimissionone></transimissionone> 
  <sendparent @listenertochildevent="getmessagefromchild"></sendparent> 
    <value :locallogo="netlogo"></value> 
    <!--无法监听，说明要在那个组件中--> 
    <button @listenertochildevent="getmessagefromchild">测试能否监听</button> 
    <my_plug_in></my_plug_in> 
    <p class="choose_p"> 
      <ul> 
 
        <li> 
          <router-link to="/foo">foo页面</router-link> 
        </li> 
        <li> 
          <router-link to="/header">header页面</router-link> 
        </li> 
        <li> 
          <router-link to="/hello">hello页面</router-link> 
        </li> 
        <li style="clear: both;list-style: none;"></li> 
      </ul> 
 
    </p> 
 
    <p class="main"> 
      <router-view class="my_router_iew"></router-view> 
    </p> 
    <testmintui></testmintui> 
  </p> 
</template> 
 
<script> 
  import value from &#39;./components/value&#39; 
  import click from "./components/click" 
  import my_plug_in from "./components/plug_in" 
  import sendparent from "./components/send_parent" 
  import testmintui from "./components/Test_mint-ui" 
  import transimissiontwo from "./components/transimissiontwo" 
  import transimissionone from "./components/transimissionone" 
 
  export default { 
    name: &#39;app&#39;, 
    data() { 
      return { 
        netlogo: "主页显示信息到组件中" 
      } 
    }, 
    components: { 
      value, 
      click, 
      my_plug_in, 
      sendparent, 
      testmintui, 
      transimissionone, 
    transimissiontwo, 
     
    }, 
    methods: { 
      getmessagefromchild: function(data) { 
        console.log(data); 
      } 
    } 
  } 
</script> 
 
<style> 
  body { 
    background-color: #f8f8ff; 
    font-family: &#39;Avenir&#39;, Helvetica, Arial, sans-serif; 
    color: #2c3e50; 
  } 
   
  ul { 
    width: 12rem; 
  } 
   
  ul li { 
    list-style: none; 
  } 
   
  ul li:not(:last-child) { 
    list-style: none; 
    width: 2rem; 
    margin-left: 0.1rem; 
    margin-right: 0.1rem; 
    float: left; 
    text-align: center; 
    background: #2C3E50; 
    color: white; 
  } 
   
  ul li a { 
    text-decoration: none; 
    font-size: 16px; 
    color: white; 
    line-height: 1rem; 
    text-align: center; 
  } 
   
  ul li:nth-child { 
    list-style: none; 
    clear: both; 
  } 
   
  .choose_p { 
    width: 100%; 
    overflow: scroll; 
  } 
</style>

window.eventBus = new Vue();