jQuery UI sortable() - listitem jumps to top in Safari and Chrome

Question

I have a sortable unordered list on the bottom of my page, which works perfect in Firefox. However, in Safari/Chrome the grabbed listitem jumps instantly to the top of the p

Answer 1

Seems like jQuery UI 1.9.2 solved the issue.

If you are unable to change the library, there's a workaround including a simple scroll bar operation. The idea is simple:

• Keep the previous scroll position every time you scroll.
• Set scroll back to the previous position when you start dragging your element.

Here you go;

var lastScrollPosition = 0; //variables defined in upper scope
var tempScrollPosition = 0;

window.onscroll = function () { // Up to you requirement you may change it to another elemnet e.g $("#YourPanel").onscroll
    clearTimeout($.data(this, 'scrollTimer'));
    $.data(this, 'scrollTimer', setTimeout(function () {
        tempScrollPosition = lastScrollPosition; // Scrolls don't change from position a to b. They cover some numbers between a and b during the change to create a smooth sliding visual. That's why we pick the previous scroll position with a timer of 250ms.
    }, 250));

    lastScrollPosition = $(document).scrollTop(); // Up to you requirement you may change it to another elemnet e.g $("#YourPanel").onscroll
};

$("#YourSortablePanel").sortable({
    start: function (event, ui) {
        $(document).scrollTop(tempScrollPosition);
    }
});