ActionScript: The Definitive Guide

Name

String Class — wrapper class for string primitive type

Availability

Flash 5

Constructor

new String(value)

Arguments

value

An expression to be resolved and, if necessary, converted to a string, then wrapped in a String object.

Properties

length

The number of characters in a string.

Class Methods

The following method is invoked through the String class itself, not through an object of the String class:

fromCharCode( )

Generate a string from one or more Latin 1/Shift-JIS code points.

Methods

The following object methods are invoked through an instance of the String class:

charAt( )

Retrieve a character at a specific position in the string.

charCodeAt( )

Retrieve the code point of a character at a specific position in the string.

concat( )

Combine one or more items into a single string.

indexOf( )

Find the first occurrence of a specified substring in a string.

lastIndexOf( )

Find the last occurrence of a specified substring in a string.

slice( )

Extract a substring from a string based on positive or negative character positions.

split( )

Convert a string to an array.

substr( )

Extract a substring from a string based on a starting position and length.

substring( )

Extract a substring from a string based on positive character positions only.

toLowerCase( )

Return a lowercase version of a string.

toUpperCase( )

Return an uppercase version of a string.

Description

The String class has several purposes:

• It allows us to access the length property of strings and perform string-related operations, such as indexOf( ) and slice( ...