Javascript Facebook API Post - facebook-javascript-sdk

Question

I just want make a script who post when i make the login. I find this code
var body = 'i13 App - Post test';
FB.api('/me/feed', 'post', { message: body }, function(response) {
if (!response || response.error) {
alert('Error occured');
}else {
alert('Post ID: ' + response.id);
}
});
it work with Facebook javascipt Test Console, but when i put in my script i never can post and received the alert('error occured),
Thz for your help,

Answer 1

Have you set up the page code correctly? ensure you have the following code within the page
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
// init the FB JS SDK
FB.init({
appId : 'YOUR_APP_ID', // App ID from the app dashboard
status : true, // Check Facebook Login status
xfbml : true // Look for social plugins on the page
});
// Additional initialization code such as adding Event Listeners goes here
};
// Load the SDK asynchronously
(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";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
</script>
https://developers.facebook.com/docs/reference/javascript/
After the user is logged in successfully you can have a button trigger the following code"
var body = 'Reading JS SDK documentation';
FB.api('/me/feed', 'post', { message: body }, function(response) {
if (!response || response.error) {
alert('Error occured');
} else {
alert('Post ID: ' + response.id);
}
});
https://developers.facebook.com/docs/reference/javascript/FB.api/