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Answers and rating deltas for

How to explain "$1,$2" in Javascript when using regular expression?

Author Votes Δ
voithos 4 +1.56
user229044 2 -0.16
Mark Chorley 1 -1.77
Niels Keurentjes 1 -1.19
Last visited: Sep 14, 2014, 5:07:29 AM