jQuery Sortable connectWith两次调用update方法 [英] jquery Sortable connectWith calls the update method twice

问题描述

在下面的代码中，将项目从列表sortable1移到sortable2时，更新函数被调用了两次.虽然我只需要调用一次该函数:

In the code below the update function gets called twice when an item is moved from list sortable1 to sortable2. Though I need to call that function only once:

$("#sortable1 tbody, #sortable2 tbody").sortable({
    connectWith: '.connectedSortable tbody',
    helper: fixHelper,
    handle : '.handle',
    update : function () {
        var order = $('#sortable1 tbody').sortable('serialize');
    }    
}).disableSelection();

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