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HTML <input> alt 属性

❮ HTML <input> 标签

示例

一个 HTML 表单,其中包含一个代表提交按钮的图像

<form action="/action_page.php">
  <label for="fname">First name:</label>
  <input type="text" id="fname" name="fname">
  <input type="image" src="submit.gif" alt="Submit" width="48" height="48">
</form>
自己尝试一下 »

定义和用法

如果用户由于某种原因无法查看图像(由于连接缓慢、src 属性错误或用户使用屏幕阅读器),alt 属性为用户提供备用文本。

注意:alt 属性只能与 <input type="image"> 一起使用。


浏览器支持

属性
alt

语法

<input alt="text">

属性值

描述
text 指定图像的备用文本

❮ HTML <input> 标签
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