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HTML <input> readonly 属性

❮ HTML <input> 标签

示例

包含只读输入字段的 HTML 表单

<form action="/action_page.php">
  <label for="country">国家:</label>
  <input type="text" id="country" name="country" value="挪威" readonly><br><br>
  <input type="submit" value="提交">
</form>
亲自尝试 »

定义和用法

readonly 属性是一个布尔属性。

存在时,它指定输入字段为只读。

只读输入字段无法修改(但是,用户可以跳到它,突出显示它并从它复制文本)。

readonly 属性可以设置为防止用户更改值,直到满足某些其他条件(例如,选择复选框等)。然后,JavaScript 可以删除 readonly 值,并使输入字段可编辑。

注意: 表单仍然会提交只读的输入字段,但不会提交禁用的输入字段!


浏览器支持

表中的数字指定完全支持该属性的第一个浏览器版本。

属性
readonly

语法

<input readonly>

❮ HTML <input> 标签
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