Question

I’m using Ariel Flesler’s awesome plugins ScrollTo & LocalScroll on a project.

I’ve copied the code from one project (where it is working perfectly to another). It’s not working on the new project and after a bit of debug I discovered that it’s the jQuery version.

The older project is on 1.3.2 and the newer is on 1.4.4. Firebug’s script debug is reporting the following error:

Break on Error
target is undefined  

Lines 2 and 3 of the following code are the reason for the error being thrown:

// Scrolling function by Ariel Flesler http://flesler.webs.com/jQuery.LocalScroll/
jQuery(function( $ ){

    var target = $().get(0);

    target.scrollLeft = target.scrollTop = 0;

    var $last = $([]);

    $('#main-contain').localScroll({
        axis:'y',
        queue:true,
        duration:1000,
        hash:true,
        lazy:true,
        offset: { left:0, top:-100 },
        onBefore:function( e, anchor, $target ){
            $last.removeClass('scrolling');
            $last = $(this).addClass('scrolling');
        },
        onAfter:function( anchor ){
            $last.removeClass('scrolling');
        }
    });
});

Any ideas why the change from jQuery 1.3.2 to jQuery 1.4.4?

Answer 1

var target = $().get(0);

This is an empty jQuery object.

for some reason, .get(0); is OK in jQuery 1.3.2, but does not work in jQuery 1.4.4. The solution is:

var target = $().get();  // note the lack of 0