- JavaScript RegExp - Home
- JavaScript RegExp - Overview
- Brackets
- JavaScript RegExp - [...]
- JavaScript RegExp - [^...]
- JavaScript RegExp - [0-9]
- JavaScript RegExp - [a-z]
- JavaScript RegExp - [A-Z]
- JavaScript RegExp - [a-zA-Z]
- Quantifiers
- JavaScript RegExp - p+
- JavaScript RegExp - p*
- JavaScript RegExp - p?
- JavaScript RegExp - p{N}
- JavaScript RegExp - p{N1,N2}
- JavaScript RegExp - p{N,}
- JavaScript RegExp - p$
- JavaScript RegExp - ^p
- Matching Characters
- JavaScript RegExp - [^a-zA-Z]
- JavaScript RegExp - p.p
- JavaScript RegExp - ^.{2}$
- JavaScript RegExp - <b>(.*)</b>
- JavaScript RegExp - p(hp)*
- Literal Characters
- JavaScript RegExp - Alphanumeric
- JavaScript RegExp - \0
- JavaScript RegExp - \t
- JavaScript RegExp - \n
- JavaScript RegExp - \v
- JavaScript RegExp - \f
- JavaScript RegExp - \r
- JavaScript RegExp - \xnn
- JavaScript RegExp - \uxxxx
- Meta Characters
- JavaScript RegExp - .
- JavaScript RegExp - \s
- JavaScript RegExp - \S
- JavaScript RegExp - \d
- JavaScript RegExp - \D
- JavaScript RegExp - \w
- JavaScript RegExp - \W
- JavaScript RegExp - [aeiou]
- JavaScript RegExp - [^aeiou]
- JavaScript RegExp - (foo|bar|baz)
- Modifiers
- JavaScript RegExp - i
- JavaScript RegExp - g
- Properties
- JavaScript RegExp - constructor
- JavaScript RegExp - global
- JavaScript RegExp - ignoreCase
- JavaScript RegExp - lastIndex
- JavaScript RegExp - multiline
- JavaScript RegExp - source
- Methods
- JavaScript RegExp - exec()
- JavaScript RegExp - test()
- JavaScript RegExp - toSource()
- JavaScript RegExp - toString()
- JavaScript RegExp Useful Resources
- JavaScript RegExp - Quick Guide
- JavaScript RegExp - Useful Resources
- JavaScript RegExp - Discussion
JavaScript RegExp - p?
Description
p? matches any string containing zero or more p's.
Example
Following example shows usage of RegExp expression.
<html> <head> <title>JavaScript RegExp</title> </head> <body> <script type = "text/javascript"> var str = "abcpp"; var pattern = /p?/g; var result = str.match(pattern); document.write("Test 1 - returned value : " + result); str = "abc"; result = str.match(pattern); document.write("<br/>Test 2 - returned value : " + result); </script> </body> </html>
Output
Test 1 - returned value : ,,,p,p, Test 2 - returned value : ,,,
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