regex to only include a-z A-Z 0-9 dashes and underscores

Question

I have searched within SO and found out several regular expressions to be used to include ONLY THESE a-z A-Z 0-9 - _. So far what I have tried was this one, /[^a-zA-Z0-9_ %\[\]\.%&-]/s. What this actually did was it did not exclude brackets {} [] and parenthesis (). I am not very experienced with regex, heck I don't fully fathom the whole meaning, structure/format of it so can somebody provide me the exact regex which I am looking for? Thanks for the time.

Another `-1` for profanity. Being new to something does not exempt you from doing a [bit of research](http://regexp.info/). — mario, Jun 18 '14 at 13:46
possible duplicate of [regular expression for letters, numbers and -](http://stackoverflow.com/q/3028642) — mario, Jun 18 '14 at 13:49
@mario - You probably mean 'thoroughness'? 'Profanity' is not the noun of 'being profound'. — Frank Conijn - Support Ukraine, Jun 18 '14 at 16:36

Harshal Mahajan · Answer 1 · 2014-06-18T13:51:37.037

5

Here it is :

  ^[a-zA-Z0-9_-]{1,}$

Will check Any word of at least one letter, number , _ or -

Here is the tutorial for basic REGEX.

edited Jun 18 '14 at 13:51

answered Jun 18 '14 at 13:42

Harshal Mahajan

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Remember `{1,}` is just `+` – Robin Jun 18 '14 at 13:57
It is up to him , how he want to use regex. i have explained only for 1 limit. – Harshal Mahajan Jun 18 '14 at 14:07

score 1 · Answer 2 · answered Jun 18 '14 at 13:45

1

This should do the trick

/^[\w\-]+$/

answered Jun 18 '14 at 13:45

RoyHB

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regex to only include a-z A-Z 0-9 dashes and underscores

2 Answers2