CSSStyleSheet: replace() method
The replace()
method of the CSSStyleSheet
interface asynchronously replaces the content of the stylesheet with the content passed into it. The method returns a promise that resolves with the CSSStyleSheet
object.
The replace()
and CSSStyleSheet.replaceSync()
methods can only be used on a stylesheet created with the CSSStyleSheet()
constructor.
Syntax
js
replace(text)
Parameters
text
-
A string containing the style rules to replace the content of the stylesheet. If the string does not contain a parseable list of rules, then the value will be set to an empty string.
Note: If any of the rules passed in
text
are an external stylesheet imported with the@import
rule, those rules will be removed, and a warning printed to the console.
Return value
A Promise
that resolves with the CSSStyleSheet
.
Exceptions
NotAllowedError
DOMException
-
Thrown if one of these two conditions is met:
- The stylesheet was not created using the
CSSStyleSheet()
constructor. - The stylesheet is flagged as unmodifiable.
- The stylesheet was not created using the
Examples
In the following example a new stylesheet is created and two CSS rules are added using replace()
. The first rule is then printed to the console, which will return: body { font-size: 1.4em; }
js
const stylesheet = new CSSStyleSheet();
stylesheet
.replace("body { font-size: 1.4em; } p { color: red; }")
.then(() => {
console.log(stylesheet.cssRules[0].cssText);
})
.catch((err) => {
console.error("Failed to replace styles:", err);
});
Specifications
Specification |
---|
CSS Object Model (CSSOM) # dom-cssstylesheet-replace |
Browser compatibility
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