HTML输入字段提示 [英] HTML input field hint

问题描述

我想向用户提供他需要输入到我的文本字段中的提示。但是，当我设置该值时，一旦用户单击文本字段，该值就不会消失。如何让它消失？

I want to provide the user with a hint on what he needs to enter into my text field. However, when I set the value, it does not disappear once a user clicks on the text field. How can you make it disappear?

<form action="input_password.htm">
  <p>Username:<br><input name="Username" value="Enter username.." type="text" size="20" maxlength="20"></p>
</form>

推荐答案

您需要附加 onFocus 事件通过Javascript输入字段：

You'd need attach an onFocus event to the input field via Javascript:

<input type="text" onfocus="this.value=''" value="..." ... />

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