The form property is used to reference the form object that contains the FileUpload box.
<html> <head> <title>Using FileUpload form property</title> </head> <body> <script language="JavaScript"> <!-- function checkFiles(){ if (document.secret.file1.value == ""){ alert("You did not enter anything for file 1"); } if (document.secret.file2.value == ""){ alert("You did not enter anything for file 2"); } else { alert("The files are okay and will be uploaded"); } } --> </script> <form name="secret"> Please choose two files to upload. <br><br> File 1:<input type="file" name="file1"> <br><br> File 2:<input type="file" name="file2"> <br><br> <input type="button" value="Verify" onClick='checkFiles()'> </form> </body> </html>
