Hi,
I need a javascript RegExp for image file validation from a file upload
form.
I need to allow image files only (jpeg/jpg/gif/png)
can anybody help me please?
thanks,
Paul.
5  3223 
wrote on 24 sep 2006 in comp.lang.javas cript:
I need a javascript RegExp for image file validation from a file upload
form.
need != want
I need to allow image files only (jpeg/jpg/gif/png)
Extention testing != file testing
can anybody help me please?
var isImageExtentio n = /.\.(jpe?g||gif| |png)$/i.test(t);
Not tested.
--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)
Evertjan. wrote:
var isImageExtentio n = /.\.(jpe?g||gif| |png)$/i.test(t);
....which allows ghost extension, too :)
Not tested.
Me neither, shame on us, coffee break?
Elegie wrote on 24 sep 2006 in comp.lang.javas cript:
Evertjan. wrote:
>var isImageExtentio n = /.\.(jpe?g||gif| |png)$/i.test(t);
...which allows ghost extension, too :)
Please explain.
>Not tested.
Me neither, shame on us, coffee break?
No coffee, why are you not tested?
--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)
Evertjan. wrote:
>>var isImageExtentio n = /.\.(jpe?g||gif| |png)$/i.test(t);
...which allows ghost extension, too :)
Please explain.
alert(/.\.(jpe?g||gif| |png)$/i.test("foo.")) ;
The syntax of regular expressions defines a single pipe as separator for
alternatives, doubling them results in your final production allowing no
extension at all.
>>Not tested.
Me neither, shame on us, coffee break?
No coffee, why are you not tested?
They weren't that friendly so I escaped :)
Cheers.
Elegie wrote on 24 sep 2006 in comp.lang.javas cript:
Evertjan. wrote:
>>>var isImageExtentio n = /.\.(jpe?g||gif| |png)$/i.test(t);
...which allows ghost extension, too :)
Please explain.
alert(/.\.(jpe?g||gif| |png)$/i.test("foo.")) ;
The syntax of regular expressions defines a single pipe as separator for
alternatives, doubling them results in your final production allowing no
extension at all.
That's why I didn't test ;-{
>>>Not tested.
Me neither, shame on us, coffee break?
No coffee, why are you not tested?
They weren't that friendly so I escaped :)
--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress) This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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