Codice da inserire dopo "
<body
"
<div id='fb-root'/>
<script>
window.fbAsyncInit = function() {
FB.init({
appId : '
APP_ID
',
xfbml : true,
version : 'v2.7'
});
};
(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>
sostituendo:
APP_ID
con l'ID della vostra app