<!DOCTYPE html>
<html>
<head>
<script data-require="jquery@*" data-semver="2.1.4" src="http://code.jquery.com/jquery-2.1.4.min.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body>
<div class="followMeBar">A</div>
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<div class="followMeBar">B</div>
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<div class="followMeBar">C</div>
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<div class="followMeBar">D</div>
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<div class="followMeBar">E</div>
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<div class="followMeBar">F</div>
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<div class="followMeBar">G</div>
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<div class="followMeBar">H</div>
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<div class="followMeBar">I</div>
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<div class="followMeBar">J</div>
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<div class="followMeBar">K</div>
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<div class="followMeBar">L</div>
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<div class="followMeBar">M</div>
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<div class="followMeBar">N</div>
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<div class="followMeBar">O</div>
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<div class="followMeBar">P</div>
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<div class="followMeBar">Q</div>
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<div class="followMeBar">R</div>
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<div class="followMeBar">S</div>
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<div class="followMeBar">T</div>
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<div class="followMeBar">U</div>
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<div class="followMeBar">V</div>
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<div class="followMeBar">W</div>
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<div class="followMeBar">X</div>
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<div class="followMeBar">Y</div>
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<div class="followMeBar">Z</div>
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</body>
</html>
var stickyHeaders = (function() {
var $stickies;
var load = function(stickies, target) {
if (typeof stickies === "object" && stickies instanceof jQuery && stickies.length > 0) {
$stickies = stickies.each(function() {
var $thisSticky = $(this);
$thisSticky
.data('originalPosition', $thisSticky.offset().top)
.data('originalHeight', $thisSticky.outerHeight());
});
target.off("scroll.stickies").on("scroll.stickies", function(event) {
_whenScrolling(event);
});
}
};
var _whenScrolling = function(event) {
var $scrollTop = $(event.currentTarget).scrollTop();
$stickies.each(function(i) {
var $thisSticky = $(this),
$stickyPosition = $thisSticky.data('originalPosition'),
$newPosition,
$nextSticky;
if ($stickyPosition <= $scrollTop) {
$newPosition = Math.max(0, $scrollTop - $stickyPosition);
$nextSticky = $stickies.eq(i + 1);
if($nextSticky.length > 0) {
$newPosition = Math.min($newPosition, ($nextSticky.data('originalPosition') - $stickyPosition) - $thisSticky.data('originalHeight'));
}
} else {
$newPosition = 0;
}
$thisSticky.css('transform', 'translateY(' + $newPosition + 'px)');
//could just as easily use top instead of transform
//$thisSticky.css('top', $newPosition + 'px');
});
};
return {
load: load
};
})();
$(function() {
stickyHeaders.load($(".followMeBar"), $(window));
});
.followMeBar {
background: #999;
padding: 10px 20px;
position: relative;
z-index: 1;
color: #fff;
}
/* For aesthetics only */
body {
margin: 0;
font-family: Segoe, "Segoe UI", "DejaVu Sans", "Trebuchet MS", Verdana, sans-serif;
}