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POCan't listen to DOMMouseScroll on Window in Firefox
 

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  1. POCan't listen to DOMMouseScroll on Window in Firefox
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    <p>I'm experiencing quite a problem related with the mousewheel (DOMMouseScroll) event with firefox. I've got a header div, a content div and a footer div. I want the user to be able to scroll the page while on the header and footer but not while on the content because it has a map object (flash object) and the mouse wheel should zoom in and zoom out. </p> <p>I'm using jQuery 1.8 and Firefox 15.0.1. I've spent pretty much all day trying to figure this out and it seems to me that this should work :</p> <pre><code>var isFireFox = (navigator.userAgent.indexOf('Firefox') != -1); var scrollEv = (isFireFox)? 'DOMMouseScroll' : 'mousewheel'; $(document).on(scrollEv, HandleScroll); function HandleScroll(e) { var sender = event.srcElement; alert(sender.id + " has sent event: " + e.type); if (sender.id == "viewerContent" || sender.id == "mapObject") { alert("Event is being blocked"); e.stopPropagation(); e.preventDefault(); } } </code></pre> <p>I've read countless posts, threads and blogs and everything I read say this should work in IE, Chrome and Firefox. Of course, it doesn't work in FireFox. It doesn't even enter the "HandleScroll" function. Also, I think it should even be possible to do something more simple, like this :</p> <pre><code>$('#viewerContent').on(scrollEv, false); $('#mapObject').on(scrollEv, false); </code></pre> <p>Have I overlooked something simple or what?</p> <p>Thanks for the help,</p> <p>Ggilmann</p> <p><strong>Added :</strong></p> <p>Following Fabrício Matté's suggestion, I also tried this :</p> <pre><code>$('#viewerContent').scroll(HandleScroll); $('#mapObject').scroll(HandleScroll); </code></pre> <p>And this :</p> <pre><code>$('#viewerContent').on('scroll', HandleScroll); $('#mapObject').on('scroll', HandleScroll); </code></pre> <p>To no avail!</p> <p><strong>Added again :</strong></p> <p>jcubic suggested I use the plugin on this page : <a href="http://github.com/brandonaaron/jquery-mousewheel" rel="nofollow">github.com/brandonaaron/jquery-mousewheel</a> </p> <p>I'm not too sure how it works, am i supposed to simply include the script in my page via a script tag then call the one of the methods as shown in the example on the link provided?</p> <p>Thanks </p> <p><strong>Further Addition :</strong></p> <p>I got the plugin working, it was quite easy. However this does not solve my problem. It does works for a standard div but it doesn't seem to work for a div containing flash content. I'm starting to think this is a flash or firefox bug as maybe detailed here : <a href="http://cookbooks.adobe.com/post_Workaround_to_support_mouse_wheel_for_FireFox_with-13086.html" rel="nofollow">http://cookbooks.adobe.com/post_Workaround_to_support_mouse_wheel_for_FireFox_with-13086.html</a></p> <p>If anyone could confirm this, I would appreciate it.</p> <p><strong>Another solution that doesn't work:</strong></p> <p>Following the suggestion made by sethetter I tried this:</p> <pre><code>var isOverContent; $('#viewerContent').on('mouseover', function(){isOverContent = true;}); $('#viewerContent').on('mouseout', function(){isOverContent = false;}); document.onscroll = HandleScroll; function HandleScroll(e) { if (isOverContent) { console.log("Tried to block event"); e.stopPropagation(); // Apparently, the "scroll" event cannot be prevented or canceled. e.preventDefault(); } } </code></pre> <p>This allows me to detect when the user scrolled over the viewerContent in FireFox. However, the prevent default and stop propagation event do not work. The page keeps on scrolling.</p>
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    1. USGgilmann
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    1. CODid you try `$('#viewerContent').on('scroll', handler)` / `$('#viewerContent').scroll(handler)`? Of course, if you want to actually cancel the scroll event, that'd be just plain annoying for the user, but `e.preventDefault()` should theoretically work.
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      1. USFabrício Matté
    2. COJust tried it, no success. The alerts don't pop up.
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    3. COFor an event like this, try not to alert, and instead use something like console.log or append something to an output div for testing.
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