Check for File Exists using Javascript

[Shrinivas Mujumdar]

Hi,

I am coding a JSP file, where there is a need for File Upload. I am using
<input type="file" ...> tag.

Now, suppose end user enters some garbage value in Textfield (in File Upload control), & clicks Submit button it gives javascript error on status bar ('Error on Page' on left hand side bottom region), It says Access is Deniedwhere i am trying to submit this form. If i browse some file using Browse button it works fine.

On click of a Submit button, i am calling a Javascript function which checks for 'Submit' button click & if Submit is clicked, sets action (.action) property to neccessary URL & submits the page to new action url. With alert i have checked for the correctness of the URL & it is fine in both cases.

My question is, Is it possible somehow so that i could say to a user that "file name is incorrect" or similar.

I can't check for file path as this system could be accessed from Windows as well as Linux OS machines.

Thanks in Advance,
Shriniwas

[Eric Pascarello]

JavaScript can not access the local file system so there is nothing you can do to see if a file exists.

Eric

[Shrinivas Mujumdar]

Thanks Eric,

Do you suggest any solution for the above mentioned problem?

Rather, it's not specific to Eric , it's open for everybody.

Thanks in Advance,
Shriniwas

[Garrett Smith]

you could try blurring the file control onfocus:

function blurFileInput( id ) {
  setTimeout( "document.getElementById('" + id + "').blur()", 1);
}
 
document.getElementById( fileInpId ).onfocus = blurFileInput;

[Bear Bibeault]

Originally posted by Garrett Smith:
you could try blurring the file control onfocus:

How would this help acertain that the file path is correct?