Loop forever and provide delta time

Question

I\'m writing an HTML5 Game Development Javascript framework and I want to provide the user the difference in time between the last tick and the current one.

Answer 1

Would like to give my two cents. Usually I use this deltatime method in my games:

const perfectFrameTime = 1000 / 60;
let deltaTime = 0;
let lastTimestamp = 0;

function start() {
    requestAnimationFrame(update);
}

function update(timestamp) {
    requestAnimationFrame(update);
    deltaTime = (timestamp - lastTimestamp) / perfectFrameTime;
    lastTimestamp = timestamp;

    // YOUR FRAME CODE HERE!

}

start();

This ensure you will have perfect deltatime (as like Unity deltaTime) so you can scale your times to frame time.