Quantifiers

• Quantifiers appear after an atom to specify how many times that atom should appear consecutively in a match
• * will match 0 or more times. /a*/ will match a string with any number of 'a's in it, even none! "bad", "cabaal", and "bcdefg" all match
• + will match 1 or more times.
• ? will match once or match nothing. (It may or may not be there.)
• {#} or {#,#} will match exactly # times, or a range from # to # times
• When used in combination with () and metasymbols you can do more useful things:

  	/\d{,2}(,\d{3})*/

  matches a number with comma separators: "1", "2,300", "46,012,962" all match