Regex, match values inside of curly brackets

Having the next string

{ Hello, testing, hi stack overflow, how is it going }

Match every word inside of curly brackets without the comma.

I tried this:

{(.*)} which take all, commas and brackets included.

{w+} I thought this will work for words but it wont, why?

Updated

Tried this but I got null, why?

    str = "{ Hello, testing, hi stack overflow, how is it going }";
    str2 = str.match("{(.*?)}")[1]; // Taking the second group
    console.log(str2);
    console.log(str2.match("/w+"));

Answer

did you try:

first get everything between {} by using

{(.*?)}

then get all words inside of the resulting string.

w+

Here is an explanation:

w+ matches any word character (equal to [a-zA-Z0-9_])
+ Quantifier — Matches between one and unlimited times, as many times as possible, giving back as needed