Problem with Regular Expression

[fgarciarico]

I'm getting crazy with a problem using regular expression. I wanna
search a string into a text and replace it the found string with the
next code, but it doesn't work and I don't know why:

new String(str_found).replace(myRe2,'<span class="bgyellow">$1</
span>');

It finds the string from myRe2, but it shows

<span class="bgyellow">$1</span>

Can anybody help me?

Thanks in advance for your help!

 

[Martin Honnen]

new String(str_found).replace(myRe2,'<span class="bgyellow">$1</
span>');

It finds the string from myRe2, but it shows

<span class="bgyellow">$1</span>

$1 is the first submatch, if you want the complete match use $&. If that
does not help show us your regular expression.

 

[fgarciarico]

Yes Martin, it works. Thanks for your help! But can you explain me
what means "$1 is the first submatch"?

 

[Martin Honnen]

But can you explain me
what means "$1 is the first submatch"?

If you use () in your regular expression then each use will be stored as
a submatch and $n accesses the nth submatch.