Webmaster in a Nutshell, 3rd Edition By Robert Eckstein, Stephen Spainhour
Table of Contents
Chapter 11. JavaScript
RegExp
Core JavaScript 1.2; JScript 3.0; ECMA v3
Regular expressions for pattern matching
/ pattern / attributes
Constructor
new RegExp( pattern , attributes )
Regular expression patterns are expressed using a complex grammar that is summarized earlier in this chapter (Section 11.2.12).
Instance Properties
global
A read-only boolean that specifies whether the RegExp has the g attribute and therefore performs global matching.
ignoreCase
A read-only boolean that specifies whether the RegExp has the i attribute and therefore performs case-insensitive matching.
lastIndex
For global RegExp objects, this read/write property specifies the character position immediately following the last match; this is the first character examined for the next match.
multiline
A read-only boolean that specifies whether the RegExp has the m attribute and therefore performs multi-line matching.
source
A read-only string that holds the source text of the regular expression pattern , excluding slashes and attributes.
Methods
exec ( string )
Matches string against this RegExp and returns an array containing the results of the match, or null if no match was found. Element 0 of the array is the matching text. Subsequent elements of the array contain the substrings that matched the subexpressions within the RegExp. The returned array also has an index property that specifies the start position of the match.
test( string )
Returns true if string contains text matching this RegExp, or false otherwise .