javascript - beforeunload event and JQuery Dialog immediately closes after switch screen -

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good day,
here structure of .php

main.php

 of navibar here.  there's iframe screen contents.

content1.php

 content 1 contains textfields.  jquery dialog if leaving screens.

content1 code : 

 $(window).bind('beforeunload', function(e){       dialog();  });

dialog(); 

 $('form[name="rowform"]').on('submit', function (e) {          e.preventdefault();      });       var fieldnamestocheck = xxxxx;      var previousvaluefieldnames = xxxxx;       if (detectchangesoninputs(fieldnamestocheck, previousvaluefieldnames)) {         $("#unsaved-values-confirmation-dialog").dialog("open");         $('.ui-dialog :button').blur();     }

for close , refresh event, beforeunload event fine. when start hitting navibar, happen is, dialog shows , closes.

is there wrong in codes? thanks!


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