Vue's props enable child components to change together with the parent component-PHP开发-php.cn

Vue's props enable child components to change together with the parent component

高洛峰

Release： 2016-12-08 16:05:08

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The example in this article shares with you Vue's props to implement changes in parent components and sub-components for your reference. The specific content is as follows

Similar to using v-bind to bind HTML features to an expression, you can also use v-bind to bind Define dynamic Props to the parent component's data. Whenever the data of the parent component changes, it will also be transmitted to the child component:

<div>
 <input v-model="parentMsg">
 <br>
 <child v-bind:my-message="parentMsg"></child>
</div>

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It is usually simpler to use the abbreviated syntax of v-bind:

Instance:

<!DOCTYPE html>
<html lang="en">
  
<head>
 <script type="text/javascript" src="vue.js"></script>
 <meta charset="UTF-8">
 <title>vue的props实现父组件变化子组件一起变化</title>
</head>
  
<body>
<div id="app1">
 <input v-model="messsage" > <!--input绑定实例中data中的message-->
 <div >
  <child v-bind:my-message="messsage"></child> <!--子组件绑定实例中data中的message-->
 </div>
  
</div>
  
 <script>
  Vue.config.debug = true;
  Vue.component(&#39;child&#39;,{
   props: [&#39;myMessage&#39;], //VUE实例中myMessage 等价于my-message
   template: &#39;<span>{{ myMessage }}</span><br>&#39;
  });
  var vm = new Vue({
   el: &#39;#app1&#39;,
   data:{
    messsage:&#39;hello you are a good boy!&#39;
   }
  });
 </script>
</body>
  
</html>

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