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Detailed explanation of v-bind and v-on use cases

php中世界最好的语言Original: 2018-05-14 13:52:122509browse

This time I will bring you a detailed explanation of the use cases of v-bind and v-on. What are the precautions for using v-bind and v-on? The following is a practical case, let's take a look.

The v-bind directive is used to update HTML responsively. The characteristic form is: v-bind:href , abbreviated as :href;

v-on directive is used to monitor DOM

eventsForm such as: v-on:click abbreviated as @click;

<body>
 <p id="test">
  <img v-bind:src="src">
  <a v-bind:href="url" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >百度一下</a>
  <a :href="url" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >百度一下</a>
  <a href="{{url}}" rel="external nofollow" >百度一下</a>
  <a v-on:click="update()" href="#" rel="external nofollow" rel="external nofollow" >更改图片</a>
  <a @click="update()" href="#" rel="external nofollow" rel="external nofollow" >更改图片</a>
 </p>
 <script type="text/javascript">
  new Vue({
   el: '#test',
   data: {
    url: "https://www.baidu.com",
    src: "img/spring.jpg"16 17 18    },
   methods: {
    update: function(){
     this.src = "img/summer.jpg";
    }
   }
  })
 </script>
</body>

note: These two instructions are only available after vue.js version 1.0

v- bind, abbreviation of v-on

When building a single page application (SPA), Vue.js will manage all templates, and the v- prefix is not so important at this time. Therefore, Vue.js provides special abbreviations for the two most commonly used instructions v-bind and v-on:

Let me introduce the abbreviation of v-bind to you:

<!-- 完整语法 --> 
<a v-bind:href="url" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></a> 
<!-- 缩写 --> 
<a :href="url" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ></a> 
<!-- 完整语法 --> 
<button v-bind:disabled="someDynamicCondition">Button</button> 
<!-- 缩写 --> 
<button :disabled="someDynamicCondition">Button</button>

v-on abbreviation:

<!-- 完整语法 --> 
<a v-on:click="doSomething"></a> 
<!-- 缩写 --> 
<a @click="doSomething"></a>

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!

Detailed explanation of v-bind and v-on use cases

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