Vue:点击列表切换颜色


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Vue点击列表切换颜色</title>
    <script src="https://unpkg.com/vue/dist/vue.js"></script>
    <style>
     .active {
         color: red;
     }
    </style>
</head>
<body>
   <div id="app">
       <ul>
           <li v-for="(item, index) in items" 
               @click="handleClick(index)"
               :class="{active: currentIndex === index}"    
           >
               {{item}}
           </li>
       </ul>
   </div>

    <script>
        const app = new Vue({
            el:"#app",
            data: {
                items: ["随笔","文章","日记","评论"],
                currentIndex: 0
            },

            methods: {
                handleClick: function(index) {
                    this.currentIndex = index;
                }
            }
        })
    </script>
</body>
</html>


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