使用 JavaScript 实现输入框聚焦时隐藏默认提示文字

输入框默认值隐藏实现示例

<div>

<label for="email">Email</label>

<input name="email" type="text" id="email" style="width:134px;" onfocus="if(this.value=='Input your email')this.value='';" onblur="if(this.value=='')this.value='Input your email';" value="Input your email" />

<label for="pwd">Password</label>

<input name="pwd" type="password" id="pwd" style="width:132px;" onfocus="if(this.value=='inputpass')this.value='';" onblur="if(this.value=='')this.value='inputpass';" value="inputpass" />

</div>