Cross browser Javascript regex

Question

I am using the following code to convert a dynamic string into a valid class.

domain.replace('.','_','gi')

This works fine in all major browsers, but not in Internet Explorer and I'm wondering why. The gi flags are for global and case insensitive, but removing them means that the replace doesn't work in Firefox either.

Any ideas on how I change this to make it more friendly with more browers?

What happens or doesn't happen? What is the expected and actual result? — Pekka
– Pekka, Commented Dec 6, 2010 at 17:59

Matti Virkkunen · Accepted Answer · 2010-12-06 18:00:01Z

10

You'll need to use an actual regexp instead of a string:

domain.replace(/\./g, "_")

The third argument (flags) is non-standard.

answered Dec 6, 2010 at 18:00

Matti Virkkunen

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3 Comments

Matti Virkkunen Over a year ago

@elusive: Why would you need the i flag for a dot?

jwueller Over a year ago

Good point. I recognized it a few seconds after i submitted. Sorry about that. +1 for the non-standard hint ;)

David Yell Over a year ago

Cracking! That's what I was missing. Will accept in 6 minutes :)

jwueller · Accepted Answer · 2010-12-06 18:05:44Z

7

You need to do it like this:

domain.replace(/\./g, '_');

edited Dec 6, 2010 at 18:05

answered Dec 6, 2010 at 17:59

jwueller

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