facebook.js

window.fbAsyncInit = function() {
	FB.init({
       appId      : '1791499064407302',
       xfbml      : true,
       version    : 'v2.7'
     });
     FB.api(
       '/874332389305736/feed',
       'GET',
       {
       	access_token : "1791499064407302|mPURG-tea6uQEDVg2PgcjlI0B5g",
       	'fields':'full_picture,message,link,created_time,type'
       },
       function(response) {
         facebookItem(response);
           // Insert your code here
       }
     );
};


function facebookItem($obj){
	$total = $obj.data.length;
	$html = '';
	
	for (var i = 0; i < $total; i++) {
		$msg = $obj.data[i].message;
		$pic = $obj.data[i].full_picture;
		$link = $obj.data[i].link;
		$date = formataData($obj.data[i].created_time);
		$type = $obj.data[i].type;
		if($type == 'photo' && $msg){
		$msg = truncar($msg,250);
		$html += '<div class="card-item">'
						+'<a class="photo" href="'+$link+'" target="_blank" style="background-image:url('+$pic+')"></a>'
						+'<p class="message">'+$msg+'</p>'
						+'<hr>'
						+'<p>'
						+'	Postado '+$date+' <a href="'+$link+'" target="_blank"><i class="fa fa-facebook" aria-hidden="true"></i></a>'
						+'</p>'
					+'</div>';
		}
	}
	$('.cards').append($html);
}
function truncar(texto,limite){
    if(texto.length>limite){    
        limite--;
        last = texto.substr(limite-1,1);
        while(last!=' ' && limite > 0){
            limite--;
            last = texto.substr(limite-1,1);
        }
        last = texto.substr(limite-2,1);
        if(last == ',' || last == ';'  || last == ':'){
             texto = texto.substr(0,limite-2) + '...';
        } else if(last == '.' || last == '?' || last == '!'){
             texto = texto.substr(0,limite-1);
        } else {
             texto = texto.substr(0,limite-1) + '...';
        }
    }
    return texto;
}
function formataData($obj){
	var date1 = new Date($obj);
	var date2 = new Date();
	var diferenca = Math.abs(date2.getTime() - date1.getTime());
	var dias = Math.ceil(diferenca / (1000 * 3600 * 24));
	if(dias > 0){
		return dias+' dias atrás';
	} else {
		return 'hoje';
	}
}