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This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

Summary

Cancels an animation frame request previously scheduled through a call to window.requestAnimationFrame().

Syntax

window.cancelAnimationFrame(requestID);

Note: Prior to Firefox 23, the function is vendor-prefixed window.mozCancelAnimationFrame(). See the compatibility table, below, for other browser implementations.

Parameters

requestID
The ID value returned by the call to window.requestAnimationFrame() that requested the callback.

Examples

var requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame ||
                            window.webkitRequestAnimationFrame || window.msRequestAnimationFrame;

var cancelAnimationFrame = window.cancelAnimationFrame || window.mozCancelAnimationFrame;

var start = window.mozAnimationStartTime;  // Only supported in FF. Other browsers can use something like Date.now().

var myReq;

function step(timestamp) {
  var progress = timestamp - start;
  d.style.left = Math.min(progress/10, 200) + "px";
  if (progress < 2000) {
    myReq = requestAnimationFrame(step);
  }
}
myReq = requestAnimationFrame(step);

window.cancelAnimationFrame(myReq);

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 21.0 webkit
24.0		 11.0 (11.0) moz
23.0		 10 15.0 6.0 webkit
6.1
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support 4.4 33 11.0 (11.0) moz
23.0		 10 33 7.1

Specification

See also

Tag del documento e collaboratori

Tag: 
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 Ultima modifica di: henryzhu,