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HTML <output> form 属性

❮ HTML <output> 标签

示例

一个 <output> 元素位于表单之外(但仍然是表单的一部分)

<form action="/action_page.php" id="numform"
oninput="x.value=parseInt(a.value)+parseInt(b.value)">
<input type="range" id="a" name="a" value="50">
+ <input type="number" id="b" name="b" value="25">
<input type="submit">
</form>

<output form="numform" id="x" name="x" for="a+b"></output>
亲自试一试 »

定义和用法

form 属性指定了 <output> 标签所属的表单。

form 属性的值必须等于同一文档中 <form> 元素的 id 属性。


浏览器支持

属性
form 不支持 不支持 不支持 不支持 不支持

语法

<output form="form_id">

属性值

描述
form_id 指定了 <output> 元素所属的表单元素。此属性的值必须是同一文档中 <form> 元素的 id 属性。

❮ HTML <output> 标签
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