<div id="app">
<span v-if="isShow">
<label for="useremail">邮箱登陆</label>
<input type="text" id="useremail" placeholder="邮箱登陆">
</span>
<span v-else>
<label for=
<div id="app">
<span v-if="isShow">
<label for="useremail">邮箱登陆</label>
<input type="text" id="useremail" placeholder="邮箱登陆">
</span>
<span v-else>
<label for=