ajax请求方式

 js向后台请求方式

 1  if(window.ActiveXObject){
                 xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
   }else if(window.XMLHttpRequest){
                  xmlHttp=new XMLHttpRequest();
   }

  var url =请求的全路径
  xmlHttp.open("post",url,true);
  xmlHttp.onreadystatechange=function (){
   if(xmlHttp.status != 200){//错误处理
    window.location.href= path+"/chart/err.jsp?eid=1";
   }
   if(xmlHttp.readyState == 4 && xmlHttp.status == 200){
    responseJson = xmlHttp.responseText;
    var myResponseJson = eval('('+responseJson+')')[0];
    dArray = eval('('+myResponseJson.datelistjson+')');
    sf = eval('('+myResponseJson.sfArray+')');
    headkey = eval('('+myResponseJson.zhibiaoArray+')');
    head = eval('('+myResponseJson.title+')');
     $ID("pageNO").value = myResponseJson.pageno;
      $ID("pageSize").value = myResponseJson.pagesize;
      $ID("dataCount").value = myResponseJson.datacount;
      ctable(dArray,filed,flag);
      $RENDER_PAGETURN(myResponseJson.pageno,myResponseJson.pagesize,myResponseJson.datacount,"pageShowDiv",setPageValuez);
      $("#TaskListTable").changeBgColor({});
      initstyle.init($ID("TaskListTable"));
      $UNLOAD_PAGE();
   }
  }
  xmlHttp.send(null); 

 

 

 

 

2$.ajax({
     url: path+'/taskv4/taskListAjax.action',
     type:"POST",
     cache: false,
     data: $('#taskListForm').serialize(),
     success: function(rsData){
      if(rsData=="timeout"){
       window.location.href= path+"/chart/err.jsp?eid=1"; return;
      }else if(rsData=="error"){
       window.location.href= path+"/chart/err.jsp?eid=100"; return;
      }
      var dataObj =  eval('(' + rsData + ')');
      $('#TaskListTable').load(path+"/taskv4/TaskListTable.jsp",function(){
//       SetRoleListValue(dataObj);
//       $ID("pageNO").value = dataObj.pageNO;
//       $ID("pageSize").value = dataObj.pageSize;
//       $ID("dataCount").value = dataObj.dataCount;
//       $RENDER_PAGETURN(dataObj.pageNO,dataObj.pageSize,dataObj.dataCount,"pageShowDiv",setPageValue);
//       $("#RoleTaskList").changeBgColor({});
//       initstyle.init($ID("TaskListTable"));
//       $ID("SelAll").setchecknew(false);
       advancedSelectValue = dataObj;
       setRoleListValuePublic(dataObj);
       $UNLOAD_PAGE();
      });
      },
     error:function(XmlHttpRequest,textStatus, errorThrown){
                     $UNLOAD_PAGE();
                     var openurl = path+'/chart/err.jsp?eid=100';
       window.open(openurl,'_self');
      }
   });