How to validate image file extension with regular expression using JavaScript [duplicate]

Question

How to validate image file extension (jpg,png,gif,bmp) with JavaScript regular expression?

stackoverflow.com/questions/10473185/…

AmmarCSE
– AmmarCSE

2015-04-19 16:50:00 +00:00
Commented Apr 19, 2015 at 16:50 — AmmarCSE
– AmmarCSE, Commented Apr 19, 2015 at 16:50

jsxt · Accepted Answer · 2015-04-19 16:58:33Z

11

Accordingly your issue the regular expression is quite simple.

/\.(jpe?g|png|gif|bmp)$/i

Do you really sure that nothing else will be used? For example, JPEG format allows both .jpg and .jpeg extensions. That's why I put e? pattern in the regular expression.

Example of validation could be as follows:

var filename = "/site/images/test.png";
if ( /\.(jpe?g|png|gif|bmp)$/i.test(filename) ) {
. . .

.

edited Apr 19, 2015 at 16:58

answered Apr 19, 2015 at 16:52

jsxt

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1 Comment

jobin Over a year ago

yes this is the regex, but how to validate the url, as example I have this path "/site/images/test.png". how to validate it ?

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