Get ID of Facebook by URL

facebook-get-id-by-url.js

getFBId = function(t)
{
	if (!window.jQuery) return;

	var span = $('#fbid');
	var url = t.value;
	
	span.text('Calcolo..');
	
	var id = url.match(/facebook\.com\/profile\.php\?id\=([0-9]*)/);
	if (id)
	{
		span.text(id[1]);
	}
	
	var usr = url.match(/facebook\.com\/([a-zA-Z0-9._-]*)/);
	if (!usr)
	{
		span.text('Errore!');
		return;
	}
	
	$.getJSON('http://graph.facebook.com/'+usr[1], function(r)
	{
		if (!r)
		{ 
			span.text('Errore!');
			return;
		}
		span.text(r.id);
	});
}