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rated 0 times [  75] [ 1]  / answers: 1 / hits: 24467  / 10 Years ago, tue, november 11, 2014, 12:00:00

I would like to use a local variable of a parent in child window. I used parent.window.opener but it returns undefined.



This is my code:





<script type=text/javascript>

 var selectedVal;



 $(document).ready(function () {

  //....

  //...

   if ($(this).val() == byActor){

           $(#tags).focus();

           $(#tags).autocomplete({

             source: actorsauto.php,

             minLength: 2,

             focus: function( event, ui ){

                   event.preventDefault(); 

                   return false;

             },

             select: function (event, ui){ 

                       var selectedVal = ui.item.value;

                       alert(selectedVal);

                   }

            }); 

   });



$('#btnRight').on('click', function (e) {

         popupCenter(movieByactor.php,_blank,400,400);

});

</script>

 </body>

 </html>


and this is a child:



<body>

 <script type=text/javascript>



  var selectedVal = parent.window.opener.selectedVal; 

   alert(selectedVal);



 </script>

</body>

More From » php
 Answers
5

You can't - the whole idea with local variables is that they are only available in whatever function scope they are declared in - and functions inside that function.



In your case select selectedVal is only available inside this function declaration:



select: function (event, ui){ 

   var selectedVal = ui.item.value;

   alert(selectedVal);

}


To use it outside this scope you need to make it global by attaching it to the window:



window.selectedVal = 'somevalue';


You can also make variables implicitly global by leaving out the var keyword - however this is a poor practice and is not allowed in strict mode.



This will allow you to you access window.selectedVal by:



window.opener.selectedVal // for windows opened with window.open()

window.parent.selectedVal // iframe parent document

[#68841] Friday, November 7, 2014, 10 Years  [reply] [flag answer]
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