Javascript RegExp

Latest revision as of 10:10, 4 March 2016

Javascript RegExp.

[edit] Constructor

• new RegExp(pattern [, flags])
  

Create a RegExp object.
Parameters:
pattern: Regexp pattern
flags: Optional list of flags:
'i': Enable case insensitive match. Disabled by default
'b': Enable basic POSIX regexp usage. Disabled by default (e.g. default is to use POSIX Extended Expression syntax)

NOTE: Flags parsing stops on unknown flag. E.g. 'iab' will apply 'i' but not 'b'.

[edit] Methods

• test(str)
  

Test for matching.
Parameters:
str: String to test
Return:
TRUE if matched, FALSE if not.

• valid()
  

Check if the pattern given in constructor is a valid regexp expression.
Return:
TRUE if the RegExp holds a valid pattern, FALSE if not.

NOTE: An invalid pattern won't match anything.

[edit] Properties

• ignoreCase
  

Boolean. True if case insensitive is enabled, false otherwise.

• basicPosix
  

Boolean. True if basic POSIX usage is enabled, false otherwise.