Calliste Hanriat Calliste Hanriat - 5 months ago 42
Javascript Question

FB is not defined javascript

I've a problem with FB JS SDK.

I'm trying to do a request to get the fan_count of a facebook page node.

Here is my code from my html file into the body :

<script>
window.fbAsyncInit = function() {
FB.init({
appId : 'your-app-id',
xfbml : true,
version : 'v2.5'
});
};

(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/sdk.js";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
</script>


And when I'm using this on my js app, I use it :

init();

function init() {
var id_fb = "l214.animaux";
while (true) {
console.log("je suis ici");
FB.api(
'/' + id_fb + '/',
'GET',
{"fields":"fan_count"},
function(response) {
alert(response.fan_count);
}
);
}
}


But the error is that FB is not defined. Any suggestions ?

Answer

This would be correct, you need to use FB after the JS SDK is initialized. That being said, you definitely don´t want to call FB.api in an infinite loop, so i removed that part:

<script>
    function init() {
        FB.api(
          '/l214.animaux',
          {"fields":"fan_count"},
          function(response) {
            alert(response.fan_count);
          }
        );
    }

    window.fbAsyncInit = function() {
      FB.init({
        appId      : 'your-app-id',
        xfbml      : true,
        version    : 'v2.5'
      });

      init();
    };

    (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/sdk.js";
      fjs.parentNode.insertBefore(js, fjs);
    }(document, 'script', 'facebook-jssdk'));
</script>

Make sure you run this from an actual server, don´t just open your HTML files in a browser without at least a local server.

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