js replace global doesn't like +?

Question

So I've been playing around with the replace function (method?) in js.

$get('msgBar').replace(/+/g,' ');

Let's say the content of $get('msgBar') is "Welcome+back+now".

replace('+',' ') would only replace the first +, and not the second.

replace(/+/g,' ') crashes

replace(/"+"/g,' ') and replace(/\+/g,' ') are both the same as the first

I'm sure the solution is easy... :)

Nordic Mainframe · Accepted Answer · 2010-07-14 16:10:53Z

6

You must quote +:

$get('msgBar').replace(/\+/g,' ');

'+' is a meta character, like '*'. It means "one more repetitions". It you literally want '+' , then you have to quote it with the backslash.

answered Jul 14, 2010 at 16:10

Nordic Mainframe

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10 Comments

Tetsujin no Oni Over a year ago

Specifically, you must quote it because '+' has meaning in regular expressions, and the first argument to replace is used as a regex, not a bare string for comparison...

Julian H. Lam Over a year ago

Unfortunately, I've already tried that (as in the original post), and it didn't work for whatever reason... that is, only the first + is replaced.

Nordic Mainframe Over a year ago

No you didn't. You forgot the 'g' - it means "global match" and instructs regex to find and replace all matches.

Julian H. Lam Over a year ago

T'was a typo. I copied and pasted your solution and it did not work. Sorry.

BoltClock Over a year ago

@Luther's answer works for me. Edit: On second thought, -deletes my answer-

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