Replace set of characters of every occurrence from a string in Javascript

Question

I have some silly issue in javascript, am so close in replacing set of characters from a string with a character, but couldn't make it completely.

Here is the code

var mystring ="[[{"id":27,"av":20}],[{"id":24,"av":20}],[{"id":28,"av":40}]]";
mystring = mystring.replace('],[', ',');

This is replacing the first occurrence of the given characters '],[' with ',' so the result is

"[[{"id":27,"av":20},{"id":24,"av":20}],[{"id":28,"av":40}]]"

What am I missing, how can I replace every occurrence of '],[' with ',' ?

Your string is a syntax error. That said, modifying JSON with string operations is probably not the best way to do things. — Pointy, Jan 15 '16 at 14:26

R.Costa · Accepted Answer · 2016-01-15T14:10:06.903

3

You need to use regex with the 'g modifier' to perform a global replacement:

mystring = mystring.replace(/\],\[/g, ',');

edited Jan 15 '16 at 14:10

answered Jan 15 '16 at 14:04

R.Costa

You should explain why a regex with the `g` modifier works differently then replace with a string as a parameter. – t3dodson Jan 15 '16 at 14:05
You're right, I just completed my answer to make it more clear – R.Costa Jan 15 '16 at 14:14

score 2 · Answer 2 · answered Jan 15 '16 at 14:07

2

Could use split and join:

mystring.split('],[').join(',');

Not sure how it compares performance wise though.

answered Jan 15 '16 at 14:07

James Coyle

2 Answers2