Post Ajax

Ajax with Plain Javascript function postAjax(url, data, success) { var params = typeof data == 'string' ? data : Object.keys(data).map(function(k){ return encodeURIComponent(k) + '=' + encodeURIComponent(data[k]) }).join('&');

        var xhr = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
        xhr.open('POST', url);
        xhr.onreadystatechange = function() {
        if (xhr.readyState>3 && xhr.status==200) { 
           success(xhr.responseText);
                }
         };
      xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
      xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
      xhr.send(params);
      return xhr;
       }

// example request

            postAjax('http://foo.bar/', 'p1=1&p2=Hello+World', function(data){ 
                  console.log(data);
              });

// example request with data object

             postAjax('http://foo.bar/', { p1: 1, p2: 'Hello World' }, function(data){ 
                   console.log(data);
               });