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Page rescrolling to top in some browsers when Javascript runs

Posted on 2014-02-27
Medium Priority
Last Modified: 2014-02-27
Please refer to this test page:

If you scroll down, there is a list of links to the left (Beef, Black Angus, etc.). If you click those, the color of the link changes and the content to the right changes. That is handled with this script:

$('#menu3 li').on('click', function(){
	var menu3click=$(this).index();
	$('#menu3 li').removeClass('onpage');
	if (!$('div#subcontent'+menu3click).is(':visible')){
		$('div.subcontent:visible').fadeOut(200, function(){

Open in new window

They are not really links, though, the code looks like this:

<ul id="menu3">
	<li>HOT DOGS</li>
	<li>Black Angus</li>

Open in new window

On all of my browsers, this is working fine (Windows/Mac, IE, Firefox, Safari, Chrome). However, my client (who is running Safari on a MacBook Pro) claims that every time he clicks one of those "links", his browser rescrolls all the way to the top of the document, which is what we are trying to avoid with these animated content swaps. I have had him clear his cache, restart browser, etc., but still not working for him. He says, "the movement is abrupt, the page is not reloading", it just seems to bounce back up to the top of the document.

I don't see anything in my code that would cause this, as its all handled by Javascript. I would appreciate any advice as I don't know what to do, since I can't even duplicate the "problem".

Thank you!
Question by:bbdesign
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LVL 58

Expert Comment

ID: 39892740
What's happening is that when you click the link and remove the content the page is shortened, the new content is added but the scroll position is being set at the no content position - which is somewhere in the middle of your hot dog
(If that makes sense)

I will have to think about a solution.
LVL 58

Expert Comment

ID: 39892795
One possible solution is wrap all your subcontentn divs in one container, and add this container into your column resizing so it is always present on the page.

Author Comment

ID: 39892871
I don't really understand, since the menu on the left side is taller than the content area anyway (or at least around the same height). As I said, I can't even duplicate the behavior in any of my browsers. Can you?
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LVL 58

Expert Comment

ID: 39892878
In Safari scroll to the bottom and click the links.
Your links are not the same height, it is shorter than the content.

Author Comment

ID: 39892966
In my script that resizes the content areas (on page load), I added this:


Open in new window

That might help with this? It will set the height of the left menu to the same as the maximum right-side content.

Not sure if this:

var getmaxheight=Math.max($('div.content3div').eq(0).height(),$('div.content3div').eq(1).height());

Open in new window

…only calculates the first instance of the content DIVs. I'm assuming it will ignore all the hidden ones that are setup for content swap when the menu is clicked.

I might need to re-run that calculation each time a menu item is clicked?
LVL 58

Accepted Solution

Gary earned 2000 total points
ID: 39892992
Yes - put the col resizer code in a function that you can call after you have faded in the content ($('div#subcontent'+menu3click).fadeIn(200))
And a call to the function to run at page load.

Author Comment

ID: 39893302
My client reports: "it doesn't jump as much". Maybe this is as good as it gets, it still need to resize if the secondary content is taller than the first, right?
LVL 58

Expert Comment

ID: 39893313
Yes, its about the best you can get. Though it shouldn't be jumping at all if the content is the same or smaller.

Author Comment

ID: 39893594
Thanks for your help!

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