what is facebook app ID?

Question

Hi i'm trying to place a facebook like button in website With the following code

    <div id="fb-root"></div>
<script>(function(d, s, id) {
  var js, fjs = d.getElementsByTagName(s)[0];
  if (d.getElementById(id)) return;
  js = d.createElement(s); js.id = id;
  js.src = "//connect.facebook.net/en_US/all.js#xfbml=1";
  fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));



  FB.Event.subscribe('edge.create',
         function(response) {
             alert("Thank you for liking my page"); 
         }
    );



</script>

<div class="fb-like-box" data-href="https://www.facebook.com/mypage" data-width="292" data-show-faces="true" data-stream="true" data-show-border="true" data-header="true"></div>

But the FB.Event function not working when i tested, I think i can use this trigger event only if i use FB.init and running inside fbAsyncInit() function.this came to know by searhing web.

i don't know these things exactly.Now the problem is Fb.init require appId,channelUrl and few more.I'm confused i didn't created any Application and i'm not creating i'm just trying to place a facebook like button to my website then how come can i provide appId.

Can anyone explain me about this appId.Does it required to create like button and to create Fb.event when a user likes my page like thanking them or am i using the given code wrongly?

Solution

It is recommended to use an App Id for every Social Plugin (like the Like Button).

And here´s an overview of how you should implement the Facebook SDK:

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

You better place that FB.Event code right where it says "Additional initialization code..." - Because right now, you are using "FB" when it´s not even initialized.

And this is where you can create an App: https://developers.facebook.com/apps

Comments

[andyrandy]

i assume you meant the first link? i fixed it, thanx.

[KajMagnus]

Do you know why it's recommended to use an app id? Seems to me the page URL should be enough

[andyrandy]

earlier you could avoid a specific spam popup with an app id, not sure if it still applies after several years though :)

[KajMagnus]

@luschn Ok :- ) Actually I just found some info about the app id, and posted an answer just below.