Basic Javascript Regex

Question

I'm trying to learn javascript Regex and I've hit a problem.

I'm trying to validate with the following rules.

Allow only:

Numbers 0-9 
( 
) 
+
-
(space)

I have come up with the regex below to handle this:

/[0-9\)\(\+\- ]+/i

The following matches but shouldn't do because it contains a @ symbol:

+0@122 0012

I'm using the below to test: (Returns true)

/[0-9\)\(\+\- ]+/i.test("+0@122 0012")

Thanks.

There's no constraints, it matches anything with a matcing character, add ^ and $. — adeneo
– adeneo, Commented Jul 30, 2014 at 14:30

HamZa · Accepted Answer · 2014-07-31 00:12:12Z

15

Your regular expression won't match the "@" character, but it doesn't have to in order for the .test() call to return true. There just has to be a match somewhere in the string.

If you want to insist that the entire string matches, you have to use ^ and $ anchors.

/^[0-9)(+ -]+$/i.test("+0@122 0012")

edited Jul 31, 2014 at 0:12

HamZa

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answered Jul 30, 2014 at 14:30

Pointy

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1 Comment

HartleySan Over a year ago

D'oh! You beat me by about three seconds!

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