Detailed explanation of Vue.js two-way binding implementation-Mini Program Development-php.cn

Detailed explanation of Vue.js two-way binding implementation

ringa_lee

Release： 2018-05-04 15:41:32

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This time I will bring you a detailed explanation of Vue.js two-way binding implementation. What are the precautions for Vue.js two-way binding implementation? The following is a practical case, let's take a look.

<html>
<head>
  <meta charset="utf-8">
</head>
<body>
  <script src="https://unpkg.com/vue/dist/vue.min.js"></script>
  <p id="app">
    <input type="text" v-model="CurrentTime" placeholder="当前时刻">
    <h1>当前时刻{{ CurrentTime }}</h1>
  </p>
  <script>
  var app = new Vue({
    el:'#app',
    data:{
      CurrentTime: new Date()
    },
    mounted:function(){
      var _this = this;
      this.timer = setInterval(function(){
        _this.CurrentTime = new Date();
      },1000);
    },
    beforeDestroy:function(){
      if(this.timer){
        clearInterval(this.timer);
      }
    }
  });
  </script>
</body>
</html>

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{{ }} is the so-called text interpolation method, the purpose is to display two-way bound data

mounted means el is mounted on the instance The event called

beforeDestory is called before the instance is destroyed

In the above example, a timer is created in the mounted event, every The current time is written into the text box in one second. Due to the two-way binding, the text of the H1 tag will also change and be consistent with the text of the text box. In the beforeDestory event, the timer will be cleared before the Vue instance is destroyed

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!