I was looking at the gsub method on the String.prototype object in
Prototype. I was trying to determine the purpose of this method. It
seems like it duplicates the functionality of the built-in replace()
method. So:
"red, blue, green".gsub(/, /, ' - ');
"red, blue, green".replace(/, /g, ' - ');
What is the difference between these lines?
Also both functions allow the second parameter to be a function
(although with different arguments).
Finally both arguments allow parenthetical matches to be in the
replacement string (although one uses #{n} and the other uses $n).
My question is why does gsub exist? Seems that although gsub is more
ruby-like it is not needed and the replace() method suffices. Am I wrong?
Eric
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