showing results for - "detect scroll javascript number vertical"
27 Feb 2016
1var lastScrollTop = 0;
3// element should be replaced with the actual target element on which you have applied scroll, use window in case of no target element.
4element.addEventListener("scroll", function(){ // or window.addEventListener("scroll"....
5   var st = window.pageYOffset || document.documentElement.scrollTop; // Credits: ""
6   if (st > lastScrollTop){
7      // downscroll code
8   } else {
9      // upscroll code
10   }
11   lastScrollTop = st <= 0 ? 0 : st; // For Mobile or negative scrolling
12}, false);
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