JavaScript window.requestAnimationFrame() Method
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JavaScript window.requestAnimationFrame() Method
The window.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: This method takes a callback as an argument to be invoked before the repaint.
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<button onclick="myStart()">Start</button>
<button onclick="myStop()">Stop</button>
<p id="point"></p>
<script>
var x = document.getElementById("point");
var num = 0;
var globalID = "";
function myFunction(){
num += 1;
x.innerHTML = num;
globalID = requestAnimationFrame(myFunction);
}
function myStart(){
globalID = requestAnimationFrame(myFunction);
}
function myStop(){
cancelAnimationFrame(globalID);
}
</script>
</body>
</html>
Syntax
window.requestAnimationFrame(callback)
Parameter Values
| Value | Type | Explanation |
|---|---|---|
| callback | Required | Specifies the function to call when it is time to update your animation for the next repaint. |
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