Vue2单一事件管理组件通信

时间:2020-05-15 scorpio_h 人气:0
本文为大家分享了vue $emit 和 $on 组件通信，供大家参考，具体内容如下
<!DOCTYPE html> 
<html lang="en"> 
<head> 
 <meta charset="UTF-8" /> 
 <title>Vue2-单一事件管理组件通信</title> 
 <script src="vue.js"></script> 
 <script type="text/javascript"> 
 
 //准备一个空的实例对象 
 var Event = new Vue(); 
 
 //组件A 
 var A = { 
  template: ` 
   <div> 
    <span>我是A组件的数据->{{a}}</span> 
    <input type="button" value="把A数据传给C" @click = "send"> 
   </div> 
  `, 
  methods: { 
   send () { 
    Event.$emit("a-msg", this.a); 
   } 
  }, 
  data () { 
   return { 
    a: "我是a组件中数据" 
   } 
  } 
 }; 
 //组件B 
 var B = { 
  template: ` 
   <div> 
    <span>我是B组件的数据->{{a}}</span> 
    <input type="button" value="把B数据传给C" @click = "send"> 
   </div> 
  `, 
  methods: { 
   send () { 
    Event.$emit("b-msg", this.a); 
   } 
  }, 
  data () { 
   return { 
    a: "我是b组件中数据" 
   } 
  } 
 }; 
 //组件C 
 var C = { 
  template: ` 
   <div> 
    <h3>我是C组件</h3> 
    <span>接收过来A的数据为: {{a}}</span> 
    <br> 
    <span>接收过来B的数据为: {{b}}</span> 
   </div> 
  `, 
  mounted () { 
   //接收A组件的数据 
   Event.$on("a-msg", function (a) { 
    this.a = a; 
   }.bind(this)); 
 
   //接收B组件的数据 
   Event.$on("b-msg", function (a) { 
    this.b = a; 
   }.bind(this)); 
  }, 
  data () { 
   return { 
    a: "", 
    b: "" 
   } 
  } 
 }; 
 window.onload = function () { 
  new Vue({ 
   el: "#box", 
   components: { 
    "dom-a": A, 
    "dom-b": B, 
    "dom-c": C 
   } 
  }); 
 }; 
 
 
 </script> 
</head> 
<body> 
 <div id="box"> 
  <dom-a><https://img.qb5200.com/download-x/dom-a>  
  <dom-b><https://img.qb5200.com/download-x/dom-b>  
  <dom-c><https://img.qb5200.com/download-x/dom-c>  
 </div> 
 
</body> 
</html>
加载全部内容