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Input Email readOnly 属性


实例

将电子邮件字段设置为只读:

 document.getElementById("myEmail").readOnly = true;
亲自试一试 »

定义和用法

readOnly 属性设置或返回电子邮件字段是否应为只读。

无法修改只读字段。 但是,用户可以选择它、突出显示它并从中复制文本。

此属性反映 HTML 只读属性。

提示:要防止用户与字段交互,请改用 disabled 属性。


浏览器支持

属性
readOnly Yes 10.0 Yes Yes Yes

语法

返回 readOnly 属性:

emailObject.readOnly

设置 readOnly 属性:

emailObject.readOnly = true|false

属性值

描述
true|false 指定电子邮件字段是否应该是只读的
  • true - 电子邮件字段是只读的
  • false - 默认值。 电子邮件字段不是只读的

技术细节

返回值: 一个布尔值,如果 email 字段是只读的,则返回 true,否则返回 false

更多实例

实例

查看电子邮件字段是否为只读:

 var x = document.getElementById("myEmail").readOnly;
亲自试一试 »

相关页面

HTML 参考手册: HTML<input> readonly 属性


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