:read-only

 :read-only CSS 伪类 表示元素不可被用户编辑的状态(如锁定的文本输入框)。

/* Selects any <input> element that is read-only */
/* Supported in Firefox with a prefix */
input:-moz-read-only {
  background-color: #ccc;
}

/* Supported in Blink/WebKit/Edge without a prefix */
input:read-only {
  background-color: #ccc;
}

注意:这个选择器不只是选择具有 readonly 属性的<input> 元素,它也会选择所有的不能被用户编辑的元素。

语法

:read-only

示例

HTML

<input type="text" value="Type whatever you want here.">
<input type="text" value="This is a read-only field." readonly>
<p>This is a normal paragraph.</p>
<p contenteditable="true">You can edit this paragraph!</p>

CSS

input { min-width: 25em; }
input:-moz-read-only { background: cyan; }
input:read-only { background: cyan; }

p:-moz-read-only { background: lightgray; }
p:read-only { background: lightgray; }
p[contenteditable="true"] { color: blue; }

输出

规范

规范 状态 备注
HTML Living Standard
:read-only
Living Standard No change.
HTML5
:read-only
Recommendation Defines the semantics regarding HTML and constraint validation.
Selectors Level 4
:read-only
Working Draft Defines the pseudo-class, but not the associated semantics.

浏览器兼容性

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
:read-onlyChrome Full support 1Edge Full support 13Firefox Full support 1.5
Prefixed Notes
Full support 1.5
Prefixed Notes
Prefixed Implemented with the vendor prefix: -moz-
Notes See bug 312971 for unprefixed status.
IE No support NoOpera Full support YesSafari Full support 4WebView Android Full support ≤37Chrome Android Full support 18Firefox Android Full support 4
Prefixed Notes
Full support 4
Prefixed Notes
Prefixed Implemented with the vendor prefix: -moz-
Notes See bug 312971 for unprefixed status.
Opera Android Full support YesSafari iOS Full support 3.2Samsung Internet Android Full support 1.0

Legend

Full support  
Full support
No support  
No support
See implementation notes.
See implementation notes.
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.

参阅