js code to read local excel document data_javascript skills

<script> <br>function readThis(){ <br>var tempStr = ""; <br>var filePath= document.all.upfile.value; <br>var oXL = new ActiveXObject("Excel.application"); <br>var oWB = oXL.Workbooks.open(filePath); <br>oWB.worksheets(1).select(); <br>var oSheet = oWB.ActiveSheet; <br>try{ <br>for(var i=2;i<46;i ){ <BR>if(oSheet.Cells(i,2).value =="null" || oSheet.Cells(i,3).value =="null" ) <BR>break; <BR>var a = oSheet.Cells(i,2).value.toString()=="undefined"?"":oSheet.Cells(i,2).value; <BR>tempStr =(" " oSheet.Cells(i,2).value <BR>" " oSheet.Cells(i,3).value <BR>" " oSheet.Cells(i,4).value <BR>" " oSheet.Cells(i,5).value <BR>" " oSheet.Cells(i,6).value "n"); <BR>} <BR>}catch(e){ <BR>//alert(e); <BR>document.all.txtArea.value = tempStr; <BR>} <BR>document.all.txtArea.value = tempStr; <BR>oXL.Quit(); <BR>CollectGarbage(); <BR>} <BR></script>