Quantitative Operators

Summary of quantitative operators used in javascript

[]	Any characters within these are interpreted as a set rather than a sequence. Any member of the set returns a positive match. For example, [abd] matches either a, b, or d rather than the pattern abd.[0-9] is the same as \d; both match a single digit
[^ ]	Negation. Positive match returns only when characters NOT within the square braces are found. [^0-9] matches any character but a digit.
*	Matches 0 or more of preceding character or set of characters
+	Matches 1 or more of the preceding character or set of characters
?	Matches 0 or 1 of the preceding character or set of characters
{1,}	Searches for at least 1 of the preceding character or set of characters. Any integer may be used instead of 1.
{2,5}	Looks for exactly between two and five occurrences of the previous character or set of characters. The two parameters sould be any integer.

EDUMAX