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Limiting Type of Files to Upload

R5 - Web Applications

Limiting Type of Files to Upload

by  NiteLink  Posted    (Edited  )
Place the following in the JS Header:

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

In the HTML Attributes of the File Upload Control, put uploadfile in the ID.

Place the following in the onClick of the button:

Code: 
LimitAttach(this.form, this.form.uploadfile.value)
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