循环遍历动态绑定样式循环遍历动态绑定样式。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。

<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .red {
            color: red;
        }
    </style>
</head>

<body>
    <div id="app">
        <h2 :titile="titile">{{titile}}</h2>        
        <input type="text" v-model='couse' v-on:keydown.enter='button'>
        <button @click='button'>添加</button>
        <!-- 循环遍历动态的添加属性 -->
        <div v-for="(item,idx) in list" :key="idx" :class='{red:isred==item}' @click='isred=item'>
            {{item}}

        </div>


    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data() {
                return {
                    titile: '我是一段文字',
                    couse: '',
                    isred: '',
                    list: [
                        'course1',
                        'course2', 
                    ],

                }
            },
            methods: {
                button() {
                    // 把表单的内容添加到列表里
                    this.list.push(this.couse)
                    this.couse = ''


                },

            }
        })

    </script>
</body>

</html>