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| -rw-r--r-- | ui/jquery.ui.draggable.js | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/ui/jquery.ui.draggable.js b/ui/jquery.ui.draggable.js index f60c54c26..9496ce3f5 100644 --- a/ui/jquery.ui.draggable.js +++ b/ui/jquery.ui.draggable.js @@ -770,6 +770,7 @@ $.ui.plugin.add("draggable", "stack", { var group = $.makeArray($(o.stack)).sort(function(a,b) { return (parseInt($(a).css("zIndex"),10) || 0) - (parseInt($(b).css("zIndex"),10) || 0); }); + if (!group.length) { return; } var min = parseInt(group[0].style.zIndex) || 0; $(group).each(function(i) { |