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No longer can access iframe contentWindow since 0.40.0

See original GitHub issue

NWJS Version : 0.41.2, bug since 0.40.0 Operating System : CentOS 7.7

Expected behavior

iframe.contentWindow should work.

Actual behavior

FAILED SecurityError: Blocked a frame with origin “chrome-extension://goedajggnemaklpbabiibhndbgcfdmoj” from accessing a cross-origin frame.

How to reproduce

Simplest NW.js app with index.html

<html><head><script>
function showLocation () {
  try {
    var location = document.querySelector("iframe").contentWindow.location.href;
  } catch (e) {
    location = `FAILED ${e}`;
  }
  document.querySelector("p").textContent = location;
}
</script></head>
<body onload="showLocation();">
<p>waiting for onload</p>
<iframe src="http://www.wikipedia.org/"></script>
</body></html>

Until NW.js 0.39.3 after loading page it shows

https://www.wikipedia.org/

This example happens to show a change of URL, from http redirected to https.

Since NW.js 0.40.0 and still in NW.js 0.41.2 after loading page it shows

SecurityError: Blocked a frame with origin “chrome-extension://goedajggnemaklpbabiibhndbgcfdmoj” from accessing a cross-origin frame.

This is supposed to work per documentation http://docs.nwjs.io/en/latest/For Users/Advanced/Security in NW.js/ where it says

you can … access to <iframe> element whose src points to remote sites

Issue Analytics

State:
Created 4 years ago
Comments:5 (2 by maintainers)

Top GitHub Comments

1reaction

liuyicommented, Nov 5, 2019

I resolved ths probem, like this: 1\set package.json “chromium-args”:“–disable-web-security’”

2\ Use window.postMessage('what your want to send",“*”) instead of javscript call.

That’s all. It works!

0reactions

josh83abccommented, Nov 13, 2019

Thanks Roger for reopening the issue. As you probably found out, it doesn’t work even on 0.43.0-beta1. A big thanks for your amazing work!

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