I have those strings:

"/page/test/myimg.jpg"
"/page/test/"
"/page2/test/"
"/page/test/other"

I want true for all strings starting with /page/test except when it ends with .jpg.

Then I did: /^\/page\/test(.*)(?!jpg)$/. Well, it's not working. :\

It should return like this:

"/page/test/myimg.jpg" // false
"/page/test/" // true
"/page2/test/" // false
"/page/test/other" // true

I have those strings:

"/page/test/myimg.jpg"
"/page/test/"
"/page2/test/"
"/page/test/other"

I want true for all strings starting with /page/test except when it ends with .jpg.

Then I did: /^\/page\/test(.*)(?!jpg)$/. Well, it's not working. :\

It should return like this:

"/page/test/myimg.jpg" // false
"/page/test/" // true
"/page2/test/" // false
"/page/test/other" // true

• javascript
• regex
• .htaccess

Share Improve this question Follow edited Aug 23, 2013 at 17:38 Bohemian♦ 426k102102 gold badges602602 silver badges746746 bronze badges asked Aug 23, 2013 at 16:27 Ratata TataRatata Tata 2,87911 gold badge3737 silver badges4949 bronze badges 3

• You can't really do negative look ups like that without doing a bit of trickery. Take a look at stackoverflow./questions/406230/… where this has been answered thoroughly. – ranieuwe Commented Aug 23, 2013 at 16:29
• What language are we talking about here? – Madara's Ghost Commented Aug 23, 2013 at 16:30
• @MadaraUchiha .htaccess – Ratata Tata Commented Aug 23, 2013 at 16:32

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2 Answers 2

Sorted by: Reset to default 4

Use a negative look behind anchored to end:

/^\/page\/test(.*)(?<!\.jpg)$/

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For clarity, this regex will match any input that *doesnt end in .jpg:

^.*(?<!\.jpg)$

Edit (now must work in JavaScript too)

JavaScript doesn't support look behinds, so this ugly option must be used, which says that at least one of the last 4 characters must be other than .jpg:

^.*([^.]...|.[^j]..|..[^p].|...[^g])$

Easily done with JavaScript:

/^(?!.*\.jpg$)\/page\/test/