Javascript get window X/Y position for scroll

Ensuring browser compatibility

While window.scrollX and window.scrollY are the modern standard, a little TLC for oldies, the browsers like Internet Explorer 6+ or Firefox 2+, helps them keep up. Reach out to document.documentElement.scrollLeft and document.documentElement.scrollTop, they are the retro counter-parts for window.pageXOffset and window.pageYOffset.

Example: // "Because grandpa still uses IE"

var x = 'scrollX' in window ? window.scrollX : document.documentElement.scrollLeft;
var y = 'scrollY' in window ? window.scrollY : document.documentElement.scrollTop;


Ensure accuracy by adjusting with document.documentElement.clientLeft (for the left border) or document.documentElement.clientTop (for the top border):

var x = window.scrollX - document.documentElement.clientLeft;
var y = window.scrollY - document.documentElement.clientTop;


Fancy footwork with scrolling

Beyond just fetching scroll position, you can cha-cha-cha with scroll animation. Let's boogie with window.scrollBy(x, y) to do a little scroll-step by particular x and y increments:

window.scrollBy(50, 100);  // ">" Dance 50px to the right and "v" groove 100px down


For dynamic stunts, spin with scroll events looped together with window.addEventListener. To keep the beat and avoid flailing with quick scrolls, keep time with a debounce function or step up with IntersectionObserver API.

Becoming a scroll ninja with events

Amplify interactive elements with real-time reactions to scroll actions:

window.addEventListener('scroll', throttleFunction(() => {
  console.log(window.scrollY);
}, 100));


Award-winning performances come with practice. Train with debounced event handlers for precise movement:

window.addEventListener('scroll', debounceFunction(() => {
  // Amazing scroll tricks performed here
}, 200));


Scrolling with finesse and total height mastery

Add jazz hands to scroll events with timeouts or CSS transitions. Access document.documentElement.scrollHeight to determine total document height and use it to create effects like progress indicators or "scroll to top" buttons:

function scrollToTop() {  // One way ticket for an express elevator
  if (window.scrollY > 0) {
    window.requestAnimationFrame(scrollToTop);
    window.scrollTo(0, window.scrollY - 30);
  }
}


Method freshness

Scrolling methods, like good wine, needs to age... just right. Outdated info makes for soggy scrolls. Upgrade your knowledge with up-to-date revision and trial runs of code examples for a scroll, smooth as butter.