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class的代码实例

时间:2022-08-16 14:58:00浏览次数:47  
标签:function Hello app class 实例 按钮 Array 代码 isActive

<body>

  <div id="app">
    <!-- 1.基本绑定class -->
    <h2 :class="classes">Hello World</h2>

    <!-- 2.动态class可以写对象语法 -->
    <button :class=" isActive ? 'active': '' " @click="btnClick">我是按钮</button>

    <!-- 2.1.对象语法的基本使用(掌握) -->
    <button :class="{ active: isActive }" @click="btnClick">我是按钮</button>

    <!-- 2.2.对象语法的多个键值对 -->
    <button :class="{ active: isActive, why: true, kobe: false }" @click="btnClick">我是按钮</button>
    
    <!-- 2.3.动态绑定的class是可以和普通的class同时的使用 -->
    <button class="abc cba" :class="{ active: isActive, why: true, kobe: false }" @click="btnClick">我是按钮</button>
    
    <!-- 2.4.动态绑定的class是可以和普通的class同时的使用 -->
    <button class="abc cba" :class="getDynamicClasses()" @click="btnClick">我是按钮</button>

    <!-- 3.动态class可以写数组语法(了解) -->
    <h2 :class="['abc', 'cba']">Hello Array</h2>
    <h2 :class="['abc', className]">Hello Array</h2>
    <h2 :class="['abc', className, isActive? 'active': '']">Hello Array</h2>
    <h2 :class="['abc', className, { active: isActive }]">Hello Array</h2>
  </div>
  
  <script src="../lib/vue.js"></script>
  <script>
    // 1.创建app
    const app = Vue.createApp({
      // data: option api
      data: function() {
        return {
          classes: "abc cba nba",
          isActive: false,
          className: "why"
        }
      },

      methods: {
        btnClick: function() {
          this.isActive = !this.isActive
        },

        getDynamicClasses: function() {
          return { active: this.isActive, why: true, kobe: false }
        }
      }
    })

    // 2.挂载app
    app.mount("#app")
  </script>

 

标签:function,Hello,app,class,实例,按钮,Array,代码,isActive
From: https://www.cnblogs.com/qd-lbxx/p/16591571.html

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