sharepoint获取当前用户信息

 function getCurrentUserInfo(fieldName)///////////////////////fieldName的值可以为"Name”,"Email"等/////////////////////
{
 currentSite = getCurrentSite();
 var thisField = "";
 var thisTextValue = RegExp("FieldInternalName=\"" + fieldName + "\"", "gi");
 $.ajax({
  async: false,
  url: currentSite + "/_layouts/userdisp.aspx?Force=True&" + new Date().getTime(),
  complete: function (xData, Status) {
   $(xData.responseText).find("table.ms-formtable td[id^='SPField']").each(function() {
    if(thisTextValue.test($(this).html())) {
     // Each fieldtype contains a different data type, as indicated by the id
     switch($(this).attr("id")) {
      case "SPFieldText":
       thisField = $(this).text();
       break;
      case "SPFieldNote":
       thisField = $(this).find("div").html();
       break;
      case "SPFieldURL":
       thisField = $(this).find("img").attr("src");
       break;
      default:
       thisField = $(this).text();
       break;
     }
     // Stop looking; we're done
     return false;
    }
   });
  },
  error:function(xData,Status,error)
  {
   unBlockPage();
   alert("Get current user failed!");
  }
 });
 return thisField.replace(/(^[\s\xA0]+|[\s\xA0]+$)/g, '');
}