before.jstree called twice during drag and drop of a node in jquery -

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i trying move nodes within the jstree(which build json_data).

when move node want display confirmation "are sure want move?". using following code. 

   $("#demo2").bind("before.jstree", function (e, data) {         if(data.func == "move_node"  && data.args[1] == false && data.plugin == "core")        {             if (confirm('are sure want move?') === false) {                e.stopimmediatepropagation();                return false;             }        }

});

but "are sure want move?" confirm message displayed twice.

may know how fix ? using latest jstree,jquery commit.and not using crrm plugin.i using dnd plugin.

please advise.

regards, peri

thanks reply chris. tried still not working. alert appears twice here also. please advice. $("#demo2").bind("before.jstree", function(e, data) { try{ var flag = 1; var nodemoved = data.args[0].o; } catch(e){ flag = 0; } if (data.func == "move_node" && data.args[1] == false && data.plugin == "core" && flag == 1) { // alert(data.func + "---" + data.args[1] + "---" + data.plugin); if(!confirm("are sure want move?")) { e.stopimmediatepropagation(); return false; } } });

i haven't run myself, i've read issue on jstree user group. believe @ time solution create global javascript flag. once user has indicated yes/no key off prevent pop-ups. of course need clear flag afterwards don't suppress future move confirmation prompts.

also, i've noticed in multiple calls before.jstree data.func == "move_node" 1 of them has defined data.args[0].o (see _get_move description of objects used in jstree data). modify code alternative global flag (i've played haven't put in production ymmv):

if(data.func == "move_node"  &&     data.args[1] == false &&     data.plugin == "core" &&    data.args[0].o != undefined)    {         // work goes here...    }

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