jQuery – 按className排序DIV

classPrefix：用于确定排序顺序的类唯一的“前缀”(在这种情况下为“cat”)
listElementSELEctor：用于获取要排序的列表的jQuery选择器.

function OrderDIV(position)
{
    var classPrefix = 'cat';
    var listElementSELEctor = '#list';

    // -- Decrement the position to make it 0 based
    position--;

    // -- Parses the "position" section from the given classes,and
    //    then the position at the specific index requested.
    var parsePosition = function(classes,pos) {
        // -- Split the "classes" into an array.
        var classList = classes.split(' ');

        // -- Determine which of the "classes" starts with the prefix we want.
        for( var i in classList )
        {
            if( classList[i].substr(0,classPrefix.length) == classPrefix )
            {
                // -- Strip out the positions section,and split it.
                var positions = classList[i].split('-')[1].split('.');

                // -- return the one position we want
                return positions[pos];
            }
        }

        // -- In the event that we don't find the class we're looking for ...
        return -1;
    }

    // -- Compares div A to div B,and returns an inDicator of the order
    var funcSort = function(a,b) {
        // -- Use "parsePosition" to determine the sortable criteria from the classes.
       var compA = parsePosition($(a).attr('class'),position);
       var compB = parsePosition($(b).attr('class'),position);
       return (compA < compB) ? -1 : (compA > compB) ? 1 : 0;
    };

    // -- SELEct the list element.
    var list = $(listElementSELEctor);

    // -- SELEct the list items,and return them as an array.
    var listitems = list.children('div').get();

    // -- Sort the array using the "funcSort".
    listitems.sort(funcSort);

    // -- Go through each of the array entries,and "append" them to the list container
    //   (this moves them to the 'BACk' of the list)
    $.each(listitems,function(idx,itm) { list.append(itm); });
}