Return value from Jquery confirm dialog box -

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im trying open jquery confirm box using following code. 

var = $('#confirm')                             .data("x","defaultvalue")             .dialog('open');  alert(a.data("x"));

inside dialog tried change value of x.

    $("#confirm").dialog({     resizable: false,     autoopen: false,     height: 180,     width: 400,     modal: true,     buttons: {         "leave page": function() {                             $(this).data("x","this test");                             $(this).dialog("close");         },         cancel: function() {             $(this).dialog("close");         }     } });

how can modified value x. @ moment alert shows "defaultvalue". want "this test".

any thoughts?

ps: can't redirect using window.open() inside dialog.

finally managed solve problem. thought post here, if needs it. 

 $("#confirm").dialog({     resizable: false,     autoopen: false,     height: 180,     width: 400,     modal: true,     buttons: {         "leave page": function () {             var anchorid = $(this).data("anchorid");             var formid = $(this).data("formid");              if (typeof anchorid !== "undefined")                 window.location.assign(anchorid);             if (typeof formid !== "undefined")                 $(formid).submit();             $(this).dialog("close");         },         cancel: function () {             $(this).dialog("close");         }     } });

and open confirm dialog 

 $("a").live("click", function () {            if (hasunsaveddata()) {         $('#confirm')          .data("anchorid", this)          .dialog('open');         return false;     } else return true; });

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