getUserInformationList

    function getUserInformationList() {
        var context = SP.ClientContext.get_current();
        var list = context.get_web().get_siteUserInfoList();  //.get_currentUser();
        var userInfoItems = list.getItems(SP.CamlQuery.createAllItemsQuery());

        context.load(userInfoItems);
        context.executeQueryAsync(
            // success callback
            function () {
                //var listItemInfo = '';
                //listItemInfo = "<table border=1><tr><td>Picture</td><td>Title</td><td>Name</td><td>Email</td><td>MobilePhone</td><td>WebSite</td><td>UserName</td></tr>";
                //for (var i = 0; i < userInfoItems.get_count() ; i++) {
                //    var item = userInfoItems.itemAt(i);

                //    var picture = (!!item.get_fieldValues()["Picture"]) ? item.get_fieldValues()["Picture"]["$1_1"] : "";

                //    listItemInfo += "<tr><td><img src='https://outlook.office365.com/owa/service.svc/s/GetPersonaPhoto?email=" + item.get_item("EMail") + "&size=HR64x64' /></td>"
                //    listItemInfo += "<td>" + item.get_item("Title") + "</td>";
                //    listItemInfo += "<td>" + item.get_item("Name") + "</td>";
                //    listItemInfo += "<td>" + item.get_item("EMail") + "</td>";
                //    listItemInfo += "<td>" + item.get_item("MobilePhone") + "</td>";
                //    listItemInfo += "<td>" + item.get_item("WebSite") + "</td>";
                //    listItemInfo += "<td>" + item.get_item("UserName") + "</td>";
                //}
                //listItemInfo += "</tr></table>";

            
                //$('#message').html(listItemInfo);
                return item.get_fieldValues()
            //fail callback
            }, function onGetUserFail(sender, args) {
                alert('Failed to get user name. Error:' + args.get_message());
            }
        );
    }