JavaScript Core Reference - Beginning JavaScript - page 677

regexp
The RegExp object is used to find patterns within string values. RegExp objects can be created in
two ways: using the RegExp constructor or a text literal. It was introduced in JavaScript 1.2.
Some of the properties in the following table have both long and short names. The short names are
derived from the Perl programming language.

Properties

property introduced description

JavaScript 1.2 Used to reference the constructor function for the object.

constructor

JavaScript 1.2 Indicates whether all possible matches in the string are to

be made, or only the first. Corresponds to the g flag.

global

JavaScript 1.2 Indicates whether the match is to be case‐insensitive.

Corresponds to the i flag.

ignoreCase

JavaScript 1.2 The string against which the regular expression is

matched.

input

JavaScript 1.2 The position in the string from which the next match is to

be started.

lastIndex

JavaScript 1.2 Indicates whether strings are to be searched across

multiple lines. Corresponds with the m flag.

multiline

JavaScript 1.2 Returns the prototype for the object, which can be used to

extend the object's interface.

prototype

JavaScript 1.2 The text of the pattern for the regular expression.

source

Methods

Method introduced description

JavaScript 1.2 Executes a search for a match in the string

parameter passed in.

exec(stringToSearch)

JavaScript 1.2 Tests for a match in the string parameter

passed in.

test(stringToMatch)

JavaScript 1.2 Converts the RegExp object into a string.

toString()

JavaScript 1.2 Returns the primitive value of the RegExp

object.

valueOf()