Hi,
I am looking for function which will check whether the uploaded file is of an image file. I want people to upload only image file and not any other file. Is it poss? I am not looking for php code. Thanks in advance.

I am not looking for php code

So what code ARE you looking for then?

javascript code, I am having file upload in jsp and onclick on submit it shud have javascript function which should check for the file extension and then the form should be submitted.

Thanks

Can't be done.

javascript has NO access to the filing system on the client machine.

neither does Flash
client side VBScript (IE only) can under certain circumstances but the user has to allow it first.

I came across this code in this forum ,

<script language="JavaScript">
    extArray = new Array(".jpg", ".png", ".bmp");
    function LimitAttach(form, fileList) {
        alert("1");
    allowSubmit = false;
    if (!fileList) return;
    while (fileList.indexOf("\\") != -1)
    fileList = fileList.slice(fileList.indexOf("\\") + 1);
    ext = fileList.slice(fileList.indexOf(".")).toLowerCase();
    for (var i = 0; i < extArray.length; i++) {
    if (extArray[i] == ext) { allowSubmit = true; break; }
    }
    if (allowSubmit) return true;
    else
    alert("Please only upload files that end in types:  "
    + (extArray.join("  ")) + "\nPlease select a new "
    + "file to upload and submit again.");
    return false;
    }
    //  End -->
</script>

I think it checks for the file extension and allow the person to submit. Well anyways, thankx for Ur help.

Can we have a link to the thread please?

Because if it works ok we can point others to it.

Personally, I never had much success with blocking file uploads client side, and of course javascript can be turned off so you still have to check server side anyway.

If you could help me in that it will be great, But anyways herez the link

http://www.webmaster-talk.com/javasc...ion-check.html

Thanks

Cheers,

I'll give that a try out later in the day.

Thanks a lot, if U can PM me it will be great. Will be waiting for Ur msg.

Thanks

Finally got to playing with this.

It certainly stops the form being submitted for file extensions that are not in the array, however do not rely on it to prevent possible malicious uploads. Always ensure that a server side check is also in place, as I said in post #6, javascript can be turned off and then there would be no checks in place.

Thankx for the help man, Will research more on this,

tc