javascript - window.attachEvent doesn't seem to be working in IE8 - Stack Overflow

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Top page:

...
<script>
if (window.addEventListener) {
 // addEventListener equivalent of code below
} else if (window.attachEvent) {
 window.attachEvent("message", function(e) {
  if (e.origin != "page2.html") { return; }
  alert(e.data);
 });
}
</script>

<iframe src="page2.html"></iframe>

page2.html:

<script>
var message = "hello!";
parent.postMessage(message, '*');
</script>

This code works fine in Chrome, Firefox and Opera. Of course IE has its own way of doing things so this code doesn't work despite using its own .attachEvent.

The page2.html is actually a page on another domain; I'm sending the correct P3P headers (shouldn't matter, but there's that).

How do I find out why postMessage doesn't seem to be reaching the parent page?

Top page:

...
<script>
if (window.addEventListener) {
 // addEventListener equivalent of code below
} else if (window.attachEvent) {
 window.attachEvent("message", function(e) {
  if (e.origin != "page2.html") { return; }
  alert(e.data);
 });
}
</script>

<iframe src="page2.html"></iframe>

page2.html:

<script>
var message = "hello!";
parent.postMessage(message, '*');
</script>

This code works fine in Chrome, Firefox and Opera. Of course IE has its own way of doing things so this code doesn't work despite using its own .attachEvent.

The page2.html is actually a page on another domain; I'm sending the correct P3P headers (shouldn't matter, but there's that).

How do I find out why postMessage doesn't seem to be reaching the parent page?

• javascript
• internet-explorer-8
• dom-events

Share Improve this question Follow edited May 26, 2020 at 12:27 Brian Tompsett - 汤莱恩 5,8937272 gold badges6161 silver badges133133 bronze badges asked Feb 6, 2013 at 20:45 dsp_099dsp_099 6,1212020 gold badges7878 silver badges131131 bronze badges

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1 Answer 1

Sorted by: Reset to default 11

attachEvent takes its event name in the form "onmessage", as opposed to addEventListener (which uses "message")

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