Programmatically Scroll

// Set the desired scroll speedconst scrollSpeed = 0.2;
// Set the delay before starting the scroll (in milliseconds)const startDelay = 5000;
// Calculate the total distance to scrollconst totalScrollDistance =  document.documentElement.scrollHeight - window.innerHeight;
// Calculate the scroll duration based on the scroll speed and total distanceconst scrollDuration = totalScrollDistance / scrollSpeed;
// Get the start timelet startTime = null;
// Function to handle the scrolling animationfunction scrollAnimation(currentTime) {  if (startTime === null) {    startTime = currentTime;  }
  const elapsedTime = currentTime - startTime;  const scrollPosition = (elapsedTime / scrollDuration) * totalScrollDistance;
  window.scrollTo(0, scrollPosition);
  if (elapsedTime < scrollDuration) {    window.requestAnimationFrame(scrollAnimation);  }}
// Function to start the scrolling animation after the specified delayfunction startScrolling() {  setTimeout(() => {    window.requestAnimationFrame(scrollAnimation);  }, startDelay);}
// Call the startScrolling function to begin the scrolling animation after the delaystartScrolling();