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HTML <input> width 属性

❮ HTML <input> 标签

示例

将图像定义为提交按钮,具有高度和宽度属性

<form action="/action_page.php">
  <label for="fname">姓氏:</label>
  <input type="text" id="fname" name="fname"><br><br>
  <label for="lname">名字:</label>
  <input type="text" id="lname" name="lname"><br><br>
  <input type="image" src="img_submit.gif" alt="Submit" width="48" height="48">
</form>
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定义和用法

width 属性指定 <input> 元素的宽度。

注意: width 属性仅与 <input type="image"> 一起使用。

提示: 始终为图像指定 height width 属性。如果设置了高度和宽度,则在页面加载时会保留图像所需的空白。但是,如果没有这些属性,浏览器将不知道图像的大小,并且无法为其保留适当的空白。效果将是页面布局在加载期间会发生变化(在图像加载时)。


浏览器支持

表中的数字指定第一个完全支持该属性的浏览器版本。

属性
width 16.0

语法

<input width="像素">

属性值

描述
像素 以像素为单位的宽度(例如 width="100")

❮ HTML <input> 标签
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