JavaScript issue with scrollTo() in Chrome
I try to create a web page with a fixed navigation bar at the top that covers the content underneath. When loading the page with an anchor in the url the normal behaviour is that the page scrolls the anchor to the top of the window. But then that content is hidden under the navigation bar. So I try to solve this problem with JavaScript scrollTo(). My solution works fine with Firefox and Opera but not in Chrome. Please try the example. Any ideas how to fix this issue in Chrome? Thank you.
test.htm:
<!DOCTYPE HTML>
<html>
<head>
<title>Test</title>
<meta charset='UTF-8'>
<style type='text/css'>
#navi { position:fixed; left:0; top:0; width:100%; height:100px; background-color:yellow; }
#spacer { background-color:cyan; height:100px; }
#spacer2 { height:1000px; }
.style1 { background-color:green; height:200px; }
</style>
<script type='text/javascript'>
/* <![CDATA[ */
function scrollAnchor() { // doesn't work in Chrome
var y = document.getElementById(window.location.hash.substr(1)).offsetTop - 110;
window.scrollTo(0, y);
//alert(y);
}
/* ]]> */
</script>
</head>
<body id='top' onload='scrollAnchor();'>
<div id='navi'>
<a href='./test2.htm'>Menu</a>
</div>
<div id='main'>
<div id='spacer'></div>
<h3 id='1'>Heading 1</h3><p class='style1'></p>
<h3 id='2'>Heading 2</h3><p class='style1'></p>
<h3 id='3'>Heading 3</h3><p class='style1'></p>
<h3 id='4'>Heading 4</h3><p class='style1'></p>
<h3 id='5'>Heading 5</h3><p class='style1'></p>
<h3 id='6'>Heading 6</h3><p class='style1'></p>
<div id='spacer2'></div>
</div>
</body>
</html>
test2.htm:
<!DOCTYPE HTML>
<html>
<head>
<title>Test</title>
<meta charset='UTF-8'>
</head>
<body>
<a href='test.htm#1'>Heading 1</a>
<a href='test.htm#2'>Heading 2</a>
<a href='test.htm#3'>Heading 3</a>
<a href='test.htm#4'>Heading 4</a>
<a href='test.htm#5'>Heading 5</a>
<a href='test.htm#6'>Heading 6</a>
</body>
</html>
Answer
Chrome is so fast that your scrollTo() action fires before Chrome's default scroll to html anchor event.
Give it a tiny delay by using
setTimeout(function() {window.scrollTo(0, y);},1)
Or simply avoid using the actual element id as hash name
instead of using
test.htm#6
use
test.htm#link_6
then you can get the real id by doing something like
window.location.hash.split('_')[1]
Hope it helps.