CSSKeyframesRule: deleteRule() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2015.

The deleteRule() method of the CSSKeyframeRule interface deletes the CSSKeyFrameRule that matches the specified keyframe selector.

Syntax

js
deleteRule(select)

Parameters

select

A string which contains the keyframe selector of the rule to be deleted, which must be:

  • a comma-separated list of percentage values between 0% and 100%;
  • or, the keywords from or to

Note that the number and order of the values in the specified keyframe selector must match those of the targeted keyframe rule(s). White-space is disregarded.

Return value

None (undefined).

Examples

The CSS includes a keyframes at-rule. This will be the first CSSRule returned by document.styleSheets[0].cssRules. myRules[0] returns a CSSKeyframesRule object. Returning the cssRules property would return a CSSRuleList containing two rules.

After deleting a rule with deleteRule() the cssRules property returns a CSSRuleList containing one rule.

css
@keyframes slide-in {
  from {
    transform: translateX(0%);
  }

  to {
    transform: translateX(100%);
  }
}
js
let myRules = document.styleSheets[0].cssRules;
let keyframes = myRules[0]; // a CSSKeyframesRule
keyframes.deleteRule("to");
console.log(keyframes.cssRules); // a CSSRuleList object with one rule

Specifications

Specification
CSS Animations Level 1
# dom-csskeyframesrule-deleterule

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
deleteRule

Legend

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Full support
Full support