return value from jquery modal dialog hat links to another page

Question

am creating a jquery modal dialog and linking it to a form in another page like this:

var $dialog = $("<div></div>")
.html('<iframe style="border: 0px; " src="' + page + '" width="100%" height="100%"></iframe>')
.dialog({
   autoOpen: false,
   modal: true,
   height: 400,
   width: 300,
   title: "Multiple HAWBs",
   buttons: {
        "Save": function() {
            $( this ).dialog( "close" );
        },
        "Cancel": function() {
            $( this ).dialog( "close" );
        }
    },
    close: function() {}
});
$dialog.dialog('open');
});

on the linked page I have a element and I am trying to read the selected values from the dialog to my parent page, how canI do this?

Answer 1

If iframe's source is different domain, you can't do that. In other case you can access its content by adding an id to that element

<iframe id="myiframe" style="border: 0px; " src="' + page + '" width="100%" height="100%"></iframe>'

and then simply

document.getElementById('myiframe').contentWindow.document

Answer 2

see if this is something you need: HERE

demo.php

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="http://code.jquery.com/ui/1.11.1/jquery-ui.min.js"></script>

<link rel="stylesheet" href="https://code.jquery.com/ui/1.11.1/themes/smoothness/jquery-ui.css" />
<script>
$(document).ready(function(){
$(".click").on('click',function(){
    myDialog();
});
});
function myDialog(){
var $dialog = $("<div></div>")
.html('<iframe style="border: 0px;" id="frame" src="view1.php" width="100%" height="100%"></iframe>')
.dialog({
    autoOpen: false,
    modal: true,
    height: 400,
    width: 300,
    title: "Multiple HAWBs",
    buttons: {
         "Save": function() {
             var data="";
            var childrens= $($(document.getElementById('frame').contentWindow.document)[0].activeElement).children();//get allthe fields of dialog
         childrens.each(function(index){
     if(childrens[index].id == 'addme1'){
        data=data+childrens[index].value;//this is just to show you the reading of content of dialog.
        }

         })
             $( this ).empty();
            $("#parent").html(data);

             $( this ).dialog( "close" );
         },
         "Cancel": function() {
             $( this ).dialog( "close" );
         }
     },
     close: function() {

     }
});
$dialog.dialog('open');

}
</script>

<div>
<div id="parent">i'll be changed using dialog data</div>
<button class="click">Open Dialog</button>

view1.php

<input type="text" id="addme">
<input type="text" id="addme1">