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HTML placeholder 属性


定义和用法

placeholder 属性指定一个简短的提示,描述输入字段或文本区域的预期值。

在用户输入值之前,此简短提示将显示在字段中。


适用于

placeholder 属性可以在以下元素上使用

元素 属性
<input> placeholder
<textarea> placeholder

示例

输入示例

两个带有占位符文本的输入字段

<form action="/action_page.php">
  <label for="phone">输入电话号码:</label><br><br>
  <input type="tel" id="phone" name="phone" placeholder="123-45-678" pattern="[0-9]{3}-[0-9]{2}-[0-9]{3}"><br><br>
  <small>格式: 123-45-678</small><br><br>
  <input type="submit">
</form> 
亲自尝试 »

文本区域示例

一个带有占位符文本的文本区域

<textarea placeholder="在此描述你自己..."></textarea>
亲自尝试 »


浏览器支持

placeholder 属性对每个元素具有以下浏览器支持

元素
input 10.0 10.0 4.0 5.0 11.0
textarea 10.0 4.0 5.0 11.5

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