Function frame

index.js:233–246

(timestamp)

let prevTimestamp = 0;
function frame(timestamp) {
    const deltaTime = (timestamp - prevTimestamp)/1000;
    prevTimestamp = timestamp;
    if (shaking) {
        const x = Math.random()*2 - 1 + 50;
        const y = Math.random()*2 - 1 + 50;
        clickMe.style.left = `${x}%`;
        clickMe.style.top  = `${y}%`;
    } else {
        clickMe.style.left = "50%";
        clickMe.style.top  = "50%";
    }
    window.requestAnimationFrame(frame);
}
window.requestAnimationFrame((timestamp) => {
    prevTimestamp = timestamp;
    window.requestAnimationFrame(frame);