JavaScript: The Definitive Guide, Fourth Edition

Name

String — support for strings

Availability

JavaScript 1.0; JScript 1.0; ECMAScript v1

Inherits from/Overrides

Inherits from Object

Constructor

new String(s) // Constructor function
String(s) // Conversion function

Arguments

s

The value to be stored in a String object or converted to a primitive string.

Returns

When String( ) is used as a constructor with the new operator, it returns a String object, which holds the string s or the string representation of s. When the String( ) constructor is used without the new operator, it simply converts s to a primitive string and returns the converted value.

Properties

length

The number of characters in the string.

Methods

charAt( )

Extracts the character at a given position from a string.

charCodeAt( )

Returns the encoding of the character at a given position in a string.

concat( )

Concatenates one or more values to a string.

indexOf( )

Searches the string for a character or substring.

lastIndexOf( )

Searches the string backward for a character or substring.

match( )

Performs pattern matching with a regular expression.

replace( )

Performs a search-and-replace operation with a regular expression.

search( )

Searches a string for a substring that matches a regular expression.

slice( )

Returns a slice or substring of a string.

split( )

Splits a string into an array of strings, breaking at a specified delimiter string or regular expression.

substring( )

Extracts a substring of a string.

substr( )

Extracts a substring of a string. A variant of substring( ...