Replace all in javascript

Question

How do I replace all occurences of "http://localhost" in a string in javascript?

I have res=res.replace(/^http\:\/\/localhost, url);, but it does not work. How do I fix it?

url is a variable and but "localhost" is a string.

UPDATE:

With the solutions below, I still get: ReferenceError: localhost is not defined. What am I missing?

UPDATE 2:

This is the (Perl) code that inserts the JS on the page:

$form .=  qq|<script>res='$doc'; loc=document.location.href; url=loc.substring(0,loc.indexOf(":8080")); res=res.replace(/http\:\/\/localhost/g, url); document.location='data:text/html;charset:utf-8,' + res; </script>|;

Well if you get that with the solutions below, than you copied something wrong. — epascarello, Jun 09 '16 at 00:57
which does not match what they have below... And that error you state should not come from that code. — epascarello, Jun 09 '16 at 01:05

Kaizhe Huang · Answer 1 · 2016-06-09T00:41:56.723

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res=res.replace(/http\:\/\/localhost/g, url);

'g' indicates to replace all.

edited Jun 09 '16 at 00:41

answered Jun 09 '16 at 00:35

Kaizhe Huang

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I get: `ReferenceError: localhost is not defined` – kepj Jun 09 '16 at 00:37
Note that the ^ at the start of the regex ensures it will only match once anyway (at the start of the string). – stewbasic Jun 09 '16 at 00:40

score 0 · Answer 2 · answered Jun 09 '16 at 00:37

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use /g to replace every occurrence in your string

Something like this

str = str.replace(/http:\/\/localhost/g,'');

answered Jun 09 '16 at 00:37

SenthilKumarM

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I get: `ReferenceError: localhost is not defined`. Obviously I don't have a variable `localhost`. – kepj Jun 09 '16 at 00:40
@kepj There's no variable `localhost` in the code. It's in a regexp, it's not a variable. – Barmar Jun 09 '16 at 01:09
@Barmar The console complains that I have no variable `localhost`. I know I don't have one. I don't understand why it complains! – kepj Jun 09 '16 at 01:12
Can you post more of your code ? – SenthilKumarM Jun 09 '16 at 01:14
@SenthilKumarM Yes, I have updated the question. – kepj Jun 09 '16 at 01:18
@SenthilKumarM I inadvertently copied an incorrect line. Fixed now. – kepj Jun 09 '16 at 01:21
Cheers !!! Hope it was useful .. – SenthilKumarM Jun 09 '16 at 01:23
@SenthilKumarM No, I meant I copied the wrong line from my code to "Update 2". – kepj Jun 09 '16 at 01:26

Replace all in javascript

2 Answers2