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Re: Send ref to frame element

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Andrew Poulos <ap_prog@hotmail.com> wrote on 06 Dec 2018 in
comp.lang.javascript: 

> I need a frameElement to send a self reference to the parent so I tried
> this 
> 
> let obj = {};
> obj.type = "ref";
> 
> if (window.frameElement !== null) {
>    obj.value = window.frameElement;
>    console.log(obj.value);
>    window.parent.postMessage( JSON.stringify(obj), "*");
>}
> 
> and in the parent
> 
> window.addEventListener('message',function(evt) {
>    let rec = JSON.parse(evt.data);
>    if (rec.type == "ref") console.log(rec.value);
>}, false);
> 
> While obj.value is a frameElement rec.value is only ever an empty
> object. 
> 
> Can postMessage send a window reference? If so, how?

you can send the window itself, 
and extract e.srcElement in the parent,
for whatever reason,
no need for 'ref' or jason:

======= test.html =======
<iframe src='iframe.html'>
</iframe>

<script>
window.addEventListener(
	"message", 
	e => console.log(e.srcElement, e.data), 
	false);
</script>
=========================

======= iframe.html =====
<script>
window.parent.postMessage('hi', "*");
</script>
=========================


-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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Thread

Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-06 15:57 +1100
  Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-06 19:02 +1100
  Re: Send ref to frame element "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-12-06 10:05 +0100
    Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-09 19:44 +1100
      Re: Send ref to frame element JJ <jj4public@vfemail.net> - 2018-12-09 16:22 +0700
  Re: Send ref to frame element Julio Di Egidio <julio@diegidio.name> - 2018-12-09 01:46 -0800
    Re: Send ref to frame element Julio Di Egidio <julio@diegidio.name> - 2018-12-09 02:06 -0800
      Re: Send ref to frame element Julio Di Egidio <julio@diegidio.name> - 2018-12-09 02:51 -0800
        Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-10 10:11 +1100
          Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-10 10:23 +1100
            Re: Send ref to frame element Julio Di Egidio <julio@diegidio.name> - 2018-12-09 16:10 -0800
              Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-10 12:44 +1100
                Re: Send ref to frame element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-10 04:17 +0100
                Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-10 15:25 +1100
                Re: Send ref to frame element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-10 21:28 +0100
                Re: Send ref to frame element "Mark-" <nospam@mapson.xyz> - 2018-12-11 15:41 +0000
                Re: Send ref to frame element Julio Di Egidio <julio@diegidio.name> - 2018-12-10 14:21 -0800
                Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-11 14:48 +1100
                Re: Send ref to frame element Julio Di Egidio <julio@diegidio.name> - 2018-12-10 23:37 -0800
                Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-12 07:51 +1100
                Re: Send ref to frame element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-11 22:52 +0100
                Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-12 09:37 +1100
                Re: Send ref to frame element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-13 17:31 +0100
                Re: Send ref to frame element "Mark-" <nospam@mapson.xyz> - 2018-12-13 17:33 +0000
                Re: Send ref to frame element "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-12-13 19:19 +0100
                Re: Send ref to frame element "Mark-" <nospam@mapson.xyz> - 2018-12-13 20:27 +0000
                Re: Send ref to frame element "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2018-12-13 19:17 +0100
                Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-14 07:56 +1100
                Re: Send ref to frame element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-13 22:44 +0100
                Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-14 09:21 +1100
                Re: Send ref to frame element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-14 01:08 +0100
                Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-14 12:54 +1100
                Re: Send ref to frame element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-14 16:04 +0100
                Re: Send ref to frame element Andrew Poulos <ap_prog@hotmail.com> - 2018-12-15 06:32 +1100
                Re: Send ref to frame element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-15 01:11 +0100

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