vue入门：实现图片点击切换

1.实现功能

2.目录结构

3.代码

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Test</title>
</head>

<body>
  <div id="app">
    <ul>
      <li v-for="(item, index) in testData">
        <span>
          <img :src="'./img/' + ((flag==index)?'test1.png':'test2.png')" @click="test(index)">{{index}}:{{item.content}}
        </span>
      </li>
    </ul>
  </div>
  <script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.js"></script>
  <script>
    var app = new Vue({
      el: '#app',
      data: {
        flag: -1,
        testData: [{
            content: 'item1'
          },
          {
            content: 'item2'
          },
          {
            content: 'item3'
          },
          {
            content: 'item4'
          },
          {
            content: 'item5'
          },
        ],
      },
      methods: {
        test: function (index) {
          if (this.flag == index) { //  已经点击过
            this.flag = -1;
          } else { //  未点击过
            this.flag = index;
          }
        }
      }
    })
  </script>
</body>

</html>
posted @ 2018-08-26 23:10  Vine.Y  阅读(2804)  评论(0)  编辑  收藏  举报
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