The str method returns the value of the substring that matched the regular expression. You can also retrieve the values of sub matches by specifying the submatch parameter.
str( [ submatch ] )
| Argument | Description | 
|---|---|
| submatch | (number) The sub match to return the value of, starting at 1 for the first sub match. With the default value of 0 the value of the whole match is returned. | 
(String). The value of the sub match.
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