file ext

[ogo796]

hi guys
new in javascript so my question is i wanna validate the file extension

like this
namewww.jpg
ojfgt.rtf
hfyrkeode.pdf

so my problem is i don't know the length of the file name so i wanna validate base file.ext

var f = fld;
var t = f.substring(-4)
so i am wondering if this is the right syntax of substring

[acoder]

Use indexOf or lastIndexOf to get the position of the dot and then use that with substring.

[hirak1984]

Use indexOf or lastIndexOf to get the position of the dot and then use that with substring.

you can use the "split" method of javascript.
it has syntax same as the "String".split( "String") in Java.
Google for it

[acoder]

you can use the "split" method of javascript.
it has syntax same as the "String".split( "String") in Java.
Google for it

Yes, that's also a possibility. Here is a useful reference.