javascript - Channel URL Facebook

I'm implementing the Facebook login in my website which is in the form of mysite.anotherdomain. I did all explained in the Documentation of the JavaScript SDK but, since I have some problems, I'm wondering if the error es from the channel URL.

What should I exactly write for the channel file?

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The channel file basically fixes certain cross-domain issues for certain browsers. The following are the three that Facebook has identified:

Pages that include code to municate across frames may cause Social Plugins to show up as blank without a channelUrl.

if no channelUrl is provided and a page includes auto-playing audio or video, the user may hear two streams of audio because the page has been loaded a second time in the background for cross domain munication.

a channel file will prevent inclusion of extra hits in your server-side logs. If you do not specify a channelUrl, you should remove page views containing fb_xd_bust or fb_xd_fragment parameters from your logs to ensure proper counts.

All you need inside the file is

<script src="//connect.facebook/en_US/all.js"></script>

You can find out more from https://developers.facebook./docs/reference/javascript/#channel

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javascript - Channel URL Facebook - Stack Overflow

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