前端-vue基础20-样式绑定细节 

<!DOCTYPE html>
<html lang="en">
 
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .active {
            width: 100px;
            height: 100px;
            border: 1px solid red;
        }
        
        .error {
            background-color: orange;
        }
        
        .test {
            color: green;
        }
        
        .base {
            font-size: 28px;
        }
    </style>
</head>
 
<body>
    <div id="app">
        <div v-bind:class="[activeClass,errorClass,{test:isTest}]">
            我是歌谣
        </div>
        <div v-bind:class='arrClasses'></div>
        <div v-bind:class='objClasses'></div>
        <button v-on:click="handle">切换</button>
        <div class="base" v-bind:class='objClasses'></div>
    </div>
    <script type="text/javascript" src="./js/vue.js"></script>
    <script>
        /* 
                                //对象绑定的值可以和数组结合使用
                                //class绑定的值可以简化操作
                                //默认的class如何处理
                                默认的class会保留
                                 */
        var vm = new Vue({
            //绑定的标签
            el: '#app',
            //自定义按键修饰符
            data: {
                activeClass: 'active',
                errorClass: 'error',
                isTest: true,
                arrClasses: ['active', 'error'],
                objClasses: {
                    active: true,
                    error: true
                }
            },
            methods: {
                handle: function() {
                    //控制isactive奇幻
                    this.activeClass = '';
                    this.errorClass = '';
                    isTest = true;
                    this.objClasses.error = false;
                }
            }
        });
    </script>
</body>
 
</html>

 

posted @ 2022-07-23 22:30  前端导师歌谣  阅读(33)  评论(0)    收藏  举报