使用 Vue.js 仿百度搜索框的实例代码

时间:2020-05-15 与蟒唯舞人气:0
整理文档，搜刮出一个使用 Vue.js 仿百度搜索框的实例代码，稍微整理精简一下做下分享。
<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>Vue demo</title>
  <style type="text/css">
  .bg {
    background: #ccc;
  }
  </style>
  <script src="https://cdn.bootcss.com/vue/2.1.7/vue.min.js"></script>
  <script src="https://cdn.bootcss.com/vue-resource/1.3.1/vue-resource.min.js"></script>
  <script type="text/javascript">
  window.onload = function() {
    new Vue({
      el: '#box',
      data: {
        inputText: '',
        text: '',
        nowIndex: -1,
        result: []
      },
      methods: {
        show: function(ev) {
          if (ev.keyCode == 38 || ev.keyCode == 40) {
            if (this.nowIndex < -1){
              return;
            }
            if (this.nowIndex != this.result.length && this.nowIndex != -1) {
              this.inputText = this.result[this.nowIndex];
            }
            return;
          }
          if (ev.keyCode == 13) {
            window.open('https://www.baidu.com/s?wd=' + this.inputText, '_blank');
            this.inputText = '';
          }
          this.text = this.inputText;
          this.$http.jsonp('https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su', {
            params: {
              wd: this.inputText
            },
            jsonp: 'cb'
          }).then(res => {
            this.result = res.data.s;
          })
        },
        down: function() {
          this.nowIndex++;
          if (this.nowIndex == this.result.length) {
            this.nowIndex = -1;
            this.inputText = this.text;
          }
        },
        up: function() {
          this.nowIndex--;
          if (this.nowIndex < -1){
            this.nowIndex = -1;
            return;
          }
          if (this.nowIndex == -1) {
            this.nowIndex = this.result.length;
            this.inputText = this.text;
          }
        }
      }
    });
  }
  </script>
</head>

<body>
  <div id="box">
    <input type="text" placeholder="请输入搜索内容" v-model='inputText' @keyup='show($event)' @keydown.down='down()' @keydown.up.prevent='up()'>
    <ul>
      <li v-for="(item, index) in result" :class='{bg: index==nowIndex}'>
        {{item}}
      </li>
    </ul>
  </div>
</body>

</html>
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