Jquery replace a specific character combination

Question

I can't figure out why my jquery replacement code wouldn't work.

I try to make the follow replacement:

http://mysite.com/_thumbs/0000312/0312718/0312718_$varm.jpg

I added '$var' to the position where I want to put a number, we can take '1' for now. So I need to replace $var for 1.

What I tried;

 var img = $('img', this).attr('src'); // I grabs the image url like above.
 img.replace(/$var/, 1)

But nothing happens.

Thanks in advance!

Nick

Pointy · Accepted Answer · 2013-09-16 20:51:35Z

2

The dollar sign is a special character in regular expressions.

img.replace(/\$var/, "1");

Escaping the $ with a backslash will tell JavaScript that you want it to match a dollar sign. Otherwise, $ means "match the end of the search string".

edit — also note that if you want the updated string you'll need to save the return value from calling .replace():

img = img.replace(/\$var/, "1");

(You can of course save the replacement results in a different variable.)

edited Sep 16, 2013 at 20:51

answered Sep 16, 2013 at 20:41

Pointy

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2 Comments

directory Over a year ago

Thanks a lot for this zupa dupa fast answer! I will accept it when I can :)

Pointy Over a year ago

Oh and also, the .replace() function returns the value but doesn't change the original string; I'll update the answer @Freshtea .

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