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CSSStyleDeclaration JS Conversion


Window requestAnimationFrame() Method

❮ Window Object

Example

Use of the requestAnimationFrame() method:

const adiv = document.getElementById('mydiv');
let leftpos = 0;

function movediv(timestamp){
  leftpos += 5;
  adiv.style.left = leftpos + 'px';
  requestAnimationFrame(movediv);
}

requestAnimationFrame(movediv);
Try it Yourself »

Description

The requestAnimationFrame() method tells the browser that you wish to perform an animation and requests that the browser call a specified function to update an animation before the next repaint.

Note: Your callback routine must itself call requestAnimationFrame() if you want to animate another frame at the next repaint.

Tip: You should call this method whenever you are ready to update your animation onscreen because:

  • The browser can optimize it, so animations will be smoother
  • Animations in inactive tabs will stop, allowing the CPU to chill
  • More battery-friendly

Browser Support

Method
requestAnimationFrame() 24.0 10.0 23.0 6.1 15.0

Syntax

requestAnimationFrame(callback)

Parameter Values

Parameter Type Description
callback String Required. A function to call when it is time to update your animation for the next repaint. The callback has one single argument, a DOMHighResTimeStamp, which indicates the current time (the time returned from performance.now() ) for when requestAnimationFrame() starts to fire callbacks


Technical Details

Return Value: A long integer. The request id, that uniquely identifies the entry in the callback list. You can pass this value to window.cancelAnimationFrame() to cancel the refresh callback request

Related Pages

Window Object: cancelAnimationFrame() Method


❮ Window Object
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