String class
793
String class
Availability
Flash Player 5 (became a native object in Flash Player 6, which improved
performance significantly).
Description
The String class is a wrapper for the string primitive data type, and provides methods and
properties that let you manipulate primitive string value types. You can convert the value of any
object into a string using the
String()
function.
All the methods of the String class, except for
concat()
,
fromCharCode()
,
slice()
, and
substr()
, are generic, which means the methods call
toString()
before performing their
operations, and you can use these methods with other non-String objects.
Because all string indexes are zero-based, the index of the last character for any string
x
is
x.length - 1
.
You can call any of the methods of the String class using the constructor method
new String
or
using a string literal value. If you specify a string literal, the ActionScript interpreter automatically
converts it to a temporary String object, calls the method, and then discards the temporary String
object. You can also use the
String.length
property with a string literal.
Do not confuse a string literal with a String object. In the following example, the first line of code
creates the string literal
first_string
, and the second line of code creates the String object
second_string
:
var first_string:String = "foo"
var second_string:String = new String("foo")
Use string literals unless you specifically need to use a String object.
Method summary for the String class
Method
Description
String.charAt()
Returns the character at a specific location in a string.
String.charCodeAt()
Returns the value of the character at the specified index as a 16-bit
integer between 0 and 65535.
String.concat()
Combines the text of two strings and returns a new string.
String.fromCharCode()
Returns a string comprising the characters specified in the parameters.
String.indexOf()
Returns the position of the first occurrence of a specified substring.
String.lastIndexOf()
Returns the position of the last occurrence of a specified substring.
String.slice()
Extracts a section of a string and returns a new string.
String.split()
Splits a String object into an array of strings by separating the string
into substrings.
String.substr()
Returns a specified number of characters in a string, beginning at a
specified location.
CHAPTER 2
ActionScript Language Reference
Содержание FLASH MX 2004-ACTIONSCRIPT LANGUAGE
Страница 1: ...ActionScript Language Reference...
Страница 20: ...20 Contents...
Страница 24: ...24 Chapter 1 Introduction...
Страница 39: ...logical AND 39 See also logical NOT inequality strict inequality logical OR equality strict equality...
Страница 145: ...Button onKeyDown 145 See also Button onKeyUp...
Страница 186: ...186 Chapter 2 ActionScript Language Reference See also Camera onActivity Camera setMotionLevel...
Страница 202: ...202 Chapter 2 ActionScript Language Reference See also break default strict equality switch...
Страница 282: ...282 Chapter 2 ActionScript Language Reference See also break continue while...
Страница 329: ...import 329 For more information on importing see Importing classes and Using packages in Using ActionScript in Flash...
Страница 383: ...LoadVars addRequestHeader 383 See also XML addRequestHeader...
Страница 388: ...388 Chapter 2 my_lv load place a valid URL pointing to a text file here...
Страница 402: ...402 Chapter 2 ActionScript Language Reference See also LocalConnection connect LocalConnection send...
Страница 463: ...Microphone setRate 463 See also Microphone rate...
Страница 469: ...Microphone silenceLevel 469 See also Microphone gain Microphone setSilenceLevel...
Страница 471: ...Microphone silenceTimeOut 471 silenceLevel_pb label Activity level inactive See also Microphone setSilenceLevel...
Страница 480: ...480 Chapter 2 ActionScript Language Reference See also Mouse addListener...
Страница 518: ...518 Chapter 2 ActionScript Language Reference See also MovieClip globalToLocal MovieClip localToGlobal...
Страница 529: ...MovieClip globalToLocal 529 See also MovieClip getBounds MovieClip localToGlobal...
Страница 535: ...MovieClip hitTest 535 See also MovieClip getBounds MovieClip globalToLocal MovieClip localToGlobal...
Страница 612: ...612 Chapter 2 ActionScript Language Reference See also MovieClipLoader onLoadStart...
Страница 623: ...NetConnection class 623 See also NetStream class Video attachVideo...
Страница 639: ...NetStream play 639 See also MovieClip attachAudio NetStream close NetStream pause Video attachVideo...
Страница 649: ...Number 649 See also NaN Number class...
Страница 679: ...on 679 on release trace X this _x trace Y this _y stopDrag See also onClipEvent...
Страница 683: ...onUpdate 683 buttonLabel textColor my_mc labelColor...
Страница 788: ...788 Chapter 2 ActionScript Language Reference See also private public...
Страница 847: ...System security allowInsecureDomain 847 See also System security allowDomain System exactSettings...
Страница 1001: ...Video height 1001 my_mc _height my_mc my_video height See also MovieClip _height Video width...
Страница 1022: ...1022 Chapter 2 ActionScript Language Reference See also XML createElement...
Страница 1057: ...XML xmlDecl 1057 See also XML docTypeDecl XML toString...
Страница 1070: ...1070 Chapter 2 ActionScript Language Reference...
Страница 1104: ...1104 Appendix Deprecated Language Elements...