simple javascript regex question

Question

How can I match the following pattern?

"anything123.anythingelse"

Alphanum of any length, with exactly 1 "." in the middle, and then alphanum of any length?

Thanks.

BalusC · Accepted Answer · 2010-06-15 22:02:18Z

3

That would then be /[a-z0-9]+\.[a-z0-9]+/i. The /i is the case insensitive modifier.

var match = /[a-z0-9]+\.[a-z0-9]+/i.test(string);
alert(match); // true or false.

If you can allow underscores, this can be done shorter: /\w+\.\w+/. The \w is the same as [a-zA-Z0-9_].

See also: http://www.regular-expressions.info

answered Jun 15, 2010 at 21:30

BalusC

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2 Comments

and [\w] is the same as \w ;)

if the alphanumeric parts can be zero length, it'd be a * instead of a + in both cases