Question

I’ve done a regular expression to match urls following the next pattern:

part1-part2-part3.html

where

part1: is a common word
part2: is an alphanumeric word with underscores, that at least contains 2 letters
part3: is a numeric word, with 1 to 10 digits

for example a valid url would be:

news-my_news_title_200_is-12345.html

so
part1 = news
part2 = my_news_title_200_is
part3 = 12345

I’ve come to this:

/^[a-z]+-([a-z0-9_]*(?=[a-z]{2,})[a-z0-9_]*).-([0-9]{1,10})\.html$/

Expressed with classes:

/^\w+-([\w\d_]*(?=\w{2,})[\w\d_]*).-(\d{1,10})\.html$/

But I guess there’s a better way to express part2 of the R.E. pattern.

Thanks in advance.

Answer 1

Try this

\b(?is)[a-z]+-\w*(?=[a-z]{2,})\w*-[0-9]{1,10}\.html\b

or

^(?is)[a-z]+-\w*(?=[a-z]{2,})\w*-[0-9]{1,10}\.html$

Play it here