sticky operations in javascript
var siteHeader = document.getElementById('siteHeader'),
siteNav = document.getElementById('siteNav');
window.onscroll = function() {
if ( siteNav.offsetTop < document.documentElement.scrollTop + 26 || siteNav.offsetTop < document.body.scrollTop + 26) {
siteHeader.setAttribute("class","sticky");
}
else {
siteHeader.setAttribute("class","");
}
}how to make a div sticky using js
<!DOCTYPE html>
<html>
<head>
<title>
How to make make a div stick to
the top of the screen once it’s
been scrolled to?
</title>
<style>
.sticky-div {
background-color: green;
position: relative;
width: 100%;
padding: 10px 0px;
}
.start {
height: 100px;
}
.end {
height: 500px;
}
</style>
</head>
<body>
<h1 style="color: green">
GeeksforGeeks
</h1>
<b>
How to make make a div stick
to the top of the screen once
it’s been scrolled to?
</b>
<p class="start">
A Computer Science portal for geeks.
It contains well written, well thought
and well explained computer science and
programming articles, quizzes and
practice/competitive programming/company
interview Questions.
</p>
<div class="sticky-div">
This is div will stick to the top when it has been scrolled past
</div>
<p class="end">
A Computer Science portal for geeks.
It contains well written, well thought
and well explained computer science and
programming articles, quizzes and
practice/competitive programming/company
interview Questions.
</p>
<script>
stickyElem =
document.querySelector(".sticky-div");
/* Gets the amount of height
of the element from the
viewport and adds the
pageYOffset to get the height
relative to the page */
currStickyPos =
stickyElem.getBoundingClientRect().top + window.pageYOffset;
window.onscroll = function() {
/* Check if the current Y offset
is greater than the position of
the element */
if (window.pageYOffset > currStickyPos) {
stickyElem.style.position = "fixed";
stickyElem.style.top = "0px";
} else {
stickyElem.style.position = "relative";
stickyElem.style.top = "initial";
}
}
</script>
</body>
</html>Copyright © 2021 Codeinu
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