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Editorial Team
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Asked: 2026-06-17T11:27:35+00:00

Facebook SDK window.fbAsyncInit not firing on localhost? worked fine last week. <div id=fb-root></div> <script>

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Facebook SDK window.fbAsyncInit not firing on localhost? worked fine last week.

<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
        console.log("hey");
        // init the FB JS SDK
        FB.init({
          appId      : '***************', // App ID from the App Dashboard
          channelUrl : '//localhost/channel.html', // Channel File 
          status     : true, // check the login status upon init?
          cookie     : true, // set sessions 
          xfbml      : true  // parse XFBML tags on this page?
        });
}
  // Load the SDK's source Asynchronously
  // Note that the debug version is being actively developed and might 
  // contain some type checks that are overly strict. 
  // Please report such bugs using the bugs tool.
  (function(d, debug){
     var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0];
     if (d.getElementById(id)) {return;}
     js = d.createElement('script'); js.id = id; js.async = true;
     js.src = "//connect.facebook.net/en_US/all" + (debug ? "/debug" : "") + ".js";
     ref.parentNode.insertBefore(js, ref);
   }(document, /*debug*/ true));
</script>

“hey” does not fire upon loading the page

additionally I noticed that when i comment out the channel url in the “Fb.init”, but add the:

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

within the header of the file, “hey” fires upon first loading the page, but not the upon subsequent tries

To be more explicit. This is what the error in my console reads:

Uncaught SyntaxError: Unexpected token ( connect.facebook.net/en_US/all/debug.js:9237
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1 Answer

  1. Editorial Team

    You missed loads the SDK below FB.init().

    (function(d, debug){
 var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0];
 if (d.getElementById(id)) {return;}
 js = d.createElement('script'); js.id = id; js.async = true;
 js.src = "//connect.facebook.net/en_US/all" + (debug ? "/debug" : "") + ".js";
 ref.parentNode.insertBefore(js, ref);
}(document, /*debug*/ false));`

    https://developers.facebook.com/docs/reference/javascript/

    and make sure you sets up App Domains in App setting page.

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