How to get List of SharePoint Groups to which Current Users belongs using Javascript ?

var userid= _spPageContextInfo.userId;
  var requestUri = _spPageContextInfo.webAbsoluteUrl + '/_api/web/CurrentUser/Groups?$select=Id,Title';

alert(requestUri);
  var requestHeaders = { "accept" : "application/json;odata=verbose" };
  $.ajax({
    url : requestUri,
    contentType : "application/json;odata=verbose",
    headers : requestHeaders,
    success : onSuccess,
    error : onError
  });

  function onSuccess(data, request){
var s='';
 for (var i = 0; i < data.d.results.length; i++)
{
s +=data.d.results[i].Title+'\n';
}
    alert(s);
}
  function onError(error) {
    alert("error");
  }