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 :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;

Note: This selector doesn't just select <input>s with readonly set on them; it will select any element that cannot be edited by the user.





<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>


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; }



Specification Status Comment
HTML Living Standard
Living Standard No change.
Recommendation Defines the semantics regarding HTML and constraint validation.
Selectors Level 4
Working Draft Defines the pseudo-class, but not the associated semantics.

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes)-mozbug 312971 Nightly build [1] (Yes) (Yes)
Editable element (except for text input fields) 未实现 未实现 (Yes)-mozbug 312971 未实现 未实现 未实现
Feature Android Chrome for Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? (Yes) (Yes) (Yes)-mozbug 312971 ? ? ?
Editable element (except for text input fields) 未实现 未实现 未实现 (Yes)-mozbug 312971 未实现 未实现 未实现

[1]: MS Edge platform status: Windows Insider Preview Build 10547+

See also


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