组件切换

组件切换：不同组件之间切换显示

方式一：使用v-if和v-else

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>组件切换方式一</title>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>

</head>
<body>
<div id="app">
<a href=":;" @click.prevent="flag=true">注册</a>
<a href=":;" @click.prevent="flag=false">登录</a>
<register v-if="flag"></register>
<login v-else="flag"></login>
</div>
<script>
  Vue.component('register',{
    template: '<h3>注册组件</h3>'
  })

  Vue.component('login',{
    template: '<h3>登录组件</h3>'
  })
  var vm = new Vue({
    el :"#app",
    data:{
        flag: false
    }
  })
</script>
</body>
</html>

方式二：使用component标签，:is属性可以用来指定要展示的组件的名称。控制了组件名称的变量值切换，就可以控制组件切换

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>组件切换方式二</title>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>

</head>
<body>
<div id="app">
  <a href=":;" @click.prevent="compName='register'">注册</a>
  <a href=":;" @click.prevent="compName='login'">登录</a>

  <component :is="compName"></component>
</div>

<script>
Vue.component('register', {
    template: '<h3>注册组件</h3>'
})

Vue.component('login', {
    template: '<h3>登录组件</h3>'
})
var vm = new Vue({
    el :"#app",
    data:{
        compName: 'login'
    }
})

</script>
</body>
</html>

组件切换动画：直接在<component>标签外加一个<transition>标签

 <!DOCTYPE html>
 <html lang="en">
 <head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>组件切换动画</title>
 <script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
 <link rel="stylesheet" href="./css/animate.min.css">
 <style>
     .v-enter,
     .v-leave-to{
         opacity: 0;
         transform: translateX(150px)
     }

     .v-enter-active,
     .v-leave-active{
         transition: all 0.5s ease;
     }
 </style>
 </head>
 <body>
 <div id="app">
     <a href=":;" @click.prevent="compName='register'">注册</a>
     <a href=":;" @click.prevent="compName='login'">登录</a>

     <transition mode="out-in">
         <component :is="compName" ></component>
     </transition>

 </div>

 <template id="register">
     <div>
     用户名：<input type="text" name="" id=""><br/>
     密码：<input type="text" name="" id=""><br />
     <input type="button" value="注册">
     </div>
 </template>

 <template id="login">
     <div>
     用户名：<input type="text" name="" id=""><br />
     密码：<input type="text" name="" id=""><br />
     <input type="button" value="登录">
     </div>
 </template>

 <script>
     Vue.component('register', {
         template: '#register'
     })

     Vue.component('login', {
         template: '#login'
     })

     var vm = new Vue({
         el :"#app",
         data:{
             compName: 'login'
         }
     })

 </script>
 </body>
 </html>