CSSMediaRule
The CSSMediaRule interface represents a single CSS @media rule.
Instance properties
Inherits properties from its ancestors CSSConditionRule, CSSGroupingRule, and CSSRule.
CSSMediaRule.mediaRead only-
Returns a
MediaListrepresenting the intended destination medium for style information.
Instance methods
No specific methods; inherits methods from its ancestors CSSConditionRule, CSSGroupingRule, and CSSRule.
Examples
The CSS below includes a media query with one style rule.
As this rule lives in the last stylesheet added to the document, it will be the first CSSRule returned by the last stylesheet in the document (document.styleSheets[document.styleSheets.length-1].cssRules).
myRules[0] returns a CSSMediaRule object, from which we can get the mediaText.
html
<p id="log"></p>
css
@media (min-width: 500px) {
body {
color: blue;
}
}
js
const log = document.getElementById("log");
const myRules = document.styleSheets[document.styleSheets.length - 1].cssRules;
const mediaList = myRules[0]; // a CSSMediaRule representing the media query.
log.textContent += ` ${mediaList.media.mediaText}`;
Specifications
| Specification |
|---|
| CSS Conditional Rules Module Level 3 # the-cssmediarule-interface |
Browser compatibility
| desktop | mobile | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
CSSMediaRule | |||||||||||
media | |||||||||||