<body>
<div id="app">
<span v-if="isUser">
<label for="username">用户账号:</label>
<input type="text" name="username" id="username" placeholder="请输入用户账号" key="username">
</span>
<span v-else>
<label for="email">用户邮箱:</label>
<input type="text" id="email" id="email" placeholder="请输入用户邮箱" key="email">
</span>
<button @click="isUser = !isUser">换种方式登录</button>
</div>
<script src="../js/vue.js"></script>
<script>
const app = new Vue({
el: '#app',
data: {
message:'你好呀',
isUser:true
}
})
</script>
</body>
登录小案例以及vue内部元素复用问题(key属性的使用)
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转载自blog.csdn.net/qq_46112274/article/details/121221971
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