Detailed explanation of vue 1.x interactive implementation of Baidu-like drop-down list-JS Tutorial-php.cn

Detailed explanation of vue 1.x interactive implementation of Baidu-like drop-down list

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Release： 2018-01-04 10:41:58

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Vue itself does not support interaction. If you want to interact, you must introduce the ajax module. The vue team provides a new library file called vue-resource.js. This article mainly introduces the example of Vue 1.x interactive implementation of Baidu-like drop-down list. The editor thinks it is quite good, so I will share it with you now and give it as a reference. Let’s follow the editor to take a look, I hope it can help everyone.

1. Usage classification

ajax interaction is usually divided into 3 categories, get, post, jsonp

html part Code: The data of the array myData is displayed through the ul list, using the "v-for" instruction

<body> 
    <p id="box">
      <input type="text" value="" v-model="m" @keyup="get()">
      {{m}}<br/>
      {{msg}}<br/>
      {{&#39;welcome&#39;|uppercase}}
      <ul>
        <li v-for="value in myData">
          {{value}}
        </li>
      </ul>
      <p v-show="myData.length == 0">暂无数据</p>
    </p> 
</body>

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1) get request

methods:{
  get: function(){
    this.$http.get(&#39;search&#39;,{
      wd:this.m
  }).then(function(res){
  this. myData= res.body
  },function(res){
  console.log(res.status)
})
}
  }

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2)post request

methods:{get : function () {
          this.$http.post(&#39;search&#39;,{
            wd:this.m
          },{
            emulateJSON:true,   //在get 请求的基础上添加了第3个参数
          }).then(function(res){
            this.myData=res.body;
          },function(res){
            console.log(&#39;err---&#39;);
            // alert(2)
            //this.myData = [&#39;aaa&#39;, &#39;a111&#39;, &#39;a222&#39;];
          })
          
        }}

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In the background project, the debugging running results are as follows:

After entering the keyword "a", enter the breakpoint and obtain the data:

3) jsonp can send cross-domain requests. It is not used much and will not be described in detail here

2. Summary:

This article requires mastering the writing method of get and post requests, v-model two-way binding data, and using v-for to display arrays in the list Data, v-show is followed by conditions to control whether the data is displayed or not

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