Javascript validation

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Ragavendran

Javascript validation
1 Answer(s) 3 years and 4 months ago
Posted in : Java Beginners

Hi,

this is ragav and my doubt is:
I am having a input type="file" text box in which the user can browse the required file.. If that file is a gif file, I have to allow user for further procession else not.. How to check whether that file name selected by the user is a gif or not in javascript? plz urgent..

View Answers

January 25, 2010 at 12:40 PM

Hi Friend,

Try the following code:

<html>
<script>
var ext = /(.gif)$/i;
function check(f){
if (ext.test(f.value)) return true;
alert('Selected file is of the wrong type.Select another one');
f.select();
f.focus();
return false;
}
</script>
<form method="post" onsubmit="return check(this.elements['file'])">
<input type="file" name="file" size="40"
onchange="return check(this)">
<input type="submit" value="Upload">
</form>

Thanks

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