requestAnimationFrame() time interval

Question

What's the simplest way to get the time interval between every two successive callbacks done by the requestAnimationFrame() function? Please help!

Answer 1

requestAnimationFrame() method get a function callback as parameter, wich get a timestamp parameter with time (in ms) at wich your callback was called... save this value and substract it from next value:

var callbacktime = 0;
function mycallback(timestamp) {
if (callbacktime) console.log(timestamp-callbacktime);
callbacktime = timestamp;
requestAnimationFrame(mycallback);
}
requestAnimationFrame(mycallback);

https://developer.mozilla.org/en-US/docs/Web/API/Window/requestAnimationFrame

Answer 2

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