javascript scroll up code example

Example 1: javascript go to top of page

window.scroll({
 top: 0, 
 left: 0, 
 behavior: 'smooth' 
});

Example 2: Scroll to the top of the page using JavaScript?

// Get The Id
var topPage = document.getElementById(`top-page`)

// On Click, Scroll to the Top of Page
topPage.onclick = () => window.scrollTo({ top: 0, behavior: 'smooth' })

// On scroll, Show/Hide the button
window.onscroll = () => {
  window.scrollY > 500
    ? (topPage.style.display = 'block')
    : (topPage.style.display = 'none')
}

// CSS
body {
    background-color: #111;
    height:5000px;
}


#top-page {
  width: 50px;
  position: fixed;
  right: 30px;
  bottom: 30px;
  cursor: pointer;
  color: white;
  display: none;
}
// HTML
<img id="top-page" src="https://svgshare.com/i/LW3.sv" alt="Top">

Example 3: scrool to top jquerry

$("a[href='#top']").click(function() {
  $("html, body").animate({ scrollTop: 0 }, "slow");
  return false;
});

Example 4: scroll down up js

var lastScrollTop = 0;

// element should be replaced with the actual target element on which you have applied scroll, use window in case of no target element.
element.addEventListener("scroll", function(){ // or window.addEventListener("scroll"....
   var st = window.pageYOffset || document.documentElement.scrollTop; // Credits: "https://github.com/qeremy/so/blob/master/so.dom.js#L426"
   if (st > lastScrollTop){
      // downscroll code
   } else {
      // upscroll code
   }
   lastScrollTop = st <= 0 ? 0 : st; // For Mobile or negative scrolling
}, false);

Example 5: javascript scroll down

window.scrollTo(300, 500);	//X=300 and Y=500