It sounds like you want to respond to a scroll on one div by scrolling another.
You've already determined how to hook the scroll event. To set the scroll position of an element (the other div), you set the element's scrollTop and scrollLeft values (which are in pixels). If you want two divs to scroll in near-unison, for instance, you'd assign the source div's scrollTop and scrollLeft to the target div.
Relevant JavaScript:
(function() {
var target = $("#target");
$("#source").scroll(function() {
target.prop("scrollTop", this.scrollTop)
.prop("scrollLeft", this.scrollLeft);
});
})();
or alternately (source):
(function() {
var target = $("#target")[0]; // <== Getting raw element
$("#source").scroll(function() {
target.scrollTop = this.scrollTop;
target.scrollLeft = this.scrollLeft;
});
})();
Full page:
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<meta charset=utf-8 />
<title>Scroll Example</title>
<style>
.scroll-example {
display: inline-block;
width: 40%;
border: 1px solid black;
margin-right: 20px;
height: 100px;
overflow: scroll;
}
</style>
</head>
<body>
<p>Scroll the left div, watch the right one.</p>
<div id="source" class="scroll-example">
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</div>
<div id="target" class="scroll-example">
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</div>
<script>
(function() {
var target = $("#target");
$("#source").scroll(function() {
target.prop("scrollTop", this.scrollTop)
.prop("scrollLeft", this.scrollLeft);
});
})();
</script>
</body>
</html>
