js 对多sheet Excel赋值操作

function ExpExcel(){

      var tempStr = "";
      var filePath =""
      var excelname=ReportFileStatus("D:\\张三.xlsx");   // 对Excel多Sheet的操作
      if(excelname=="Ture")
       {
           filePath="D:\\张三.xlsx";
       }
      else
       {
             filePath= "D:\Temp.xlsx";  // 如果不存在当前人的excel就用模板

       }
      var oXL = new ActiveXObject("Excel.application"); 

      var oWB = oXL.Workbooks.open(filePath);
      oXL.Visible = true;
      var sstep=Getvalue("step");
      switch(sstep)
      {

       case "1":
            oWB.worksheets(1).select();  // 操作不同的sheet
          break;
          .
          .
          .
          .
          .
          .

        }
      var oSheet = oWB.ActiveSheet;

      try{
         oSheet.Cells(3,3).value ="";            //cell赋值
         oSheet.Cells(3,6).value = ""; 

      }catch(e)
      {
           oWB.Close();
           oXL.Quit();
           oXl=null;
      } 

        oSheet.SaveAs("D:\\abc.xlsx");   //另存
        oWB.Visible=false;
        oWB.Close();
        oXL.Quit();
        oXl=null;

        var idtmr = "";
        idtmr = window.setinterval( "cleanup(); ",1);    //销毁对象

}

function Cleanup() {
window.clearInterval(idTmr);
CollectGarbage();
}