в 09:19, 26 мая 2010

2010-05-26T09:19:12Z

Admin: 1 версия

2010-05-26T08:14:35Z

1 версия

Новая страница

==Case-insensitive, you can add the i flag:==



<source lang="java">

package{
import flash.display.Sprite;
import flash.utils.*;
public class Main extends Sprite{
public function Main(){
var reCase:RegExp = new RegExp("abc","i");
trace(reCase.test("aBc"));
}
}
}
</source>

==Creating a Regular Expression Object==



<source lang="java">

package{
import flash.display.Sprite;
import flash.utils.*;
public class Main extends Sprite{
public function Main(){
var reCase:RegExp = new RegExp("abc");
trace(reCase.test("aBc"));
reCase.rupile("abc", "i");
trace(reCase.test("aBc"));
}
}
}
</source>

==invert a character class by using a caret (^) immediately after the open bracket ([).==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
trace("roger dodger".match(/[^oge\s]/g)); //r,r,d,d,r
}
}
}
</source>

==Matching Using a Regular Expression Object==



<source lang="java">

package{
import flash.display.Sprite;
import flash.utils.*;
public class Main extends Sprite{
public function Main(){
var reCase:RegExp = new RegExp("abc");
trace(reCase.test("aBc")); // Displays: false;
}
}
}
</source>

==(*) quantifier matches zero or more times:==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
trace("a thousand thousandss!".match(/thousands*/g)); //thousand,thousandss
}
}
}
</source>

==Quantifiers==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
trace(/\w+:\s*\$\d+/.test("soup: $40")); //true
}
}
}
</source>

==RegExp("(A|BC)* *(A);*(B)* *(C)* *(A|B|C)*", "i")==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var reCase:RegExp = new RegExp("(A|BC)* *(A);*(B)* *(C)* *(A|B|C)*", "i");
var aMatch:Array = reCase.exec("action");
trace(aMatch);
aMatch = reCase.exec("A B C");
trace(aMatch);
aMatch = reCase.exec("B C");
trace(aMatch);
aMatch = reCase.exec("A B C");
trace(aMatch);
aMatch = reCase.exec("A C B");
trace(aMatch);
}
}
}
</source>

==Regular expression /\w/ is created in ActionScript==



<source lang="java">

package{
import flash.display.Sprite;
import flash.utils.*;
public class Main extends Sprite{
public function Main(){
var reCase:RegExp = new RegExp("\\w");
trace(reCase.test("aBc"));
}
}
}
</source>

==String Methods and Regular Expressions==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var reCase:RegExp = new RegExp("(\\w)+", "g");
var sVal = new String("abc def ghi");
var aMatches:Array = sVal.match(reCase);
trace(aMatches.toString());
}
}
}
</source>

==To escape a character, simply preface it with a backslash (\). This goes for the backslash character as well.==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
trace("c:\\windows\\"); //c:\windows\
}
}
}
</source>

==To flag it to match globally and multiline, the following will work:==



<source lang="java">

package{
import flash.display.Sprite;
import flash.utils.*;
public class Main extends Sprite{
public function Main(){
var reCase:RegExp = new RegExp("abc", "gm");
trace(reCase.test("aBc"));
}
}
}
</source>

==To know whether at least one match exists.==



<source lang="java">

package{
import flash.display.Sprite;
import flash.utils.*;
public class Main extends Sprite{
public function Main(){
var sEmail:String = new String("someone@someserver.ru");
var reEmail:RegExp = new RegExp("^([\\w\\-\\.]+) ;@(([\\w\\-]{2,}\\.)+[\\w\\-]{2,3})$");
trace(reEmail.test(sEmail));
}
}
}
</source>

==To match an optional character or sequence, use the question mark quantifier (?).==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
var betterPhoneNumber:RegExp = /$?\d{3}$?-?\d{3}-?\d{4}/;
trace(betterPhoneNumber.test("(703)222-1234")); //true
trace(betterPhoneNumber.test("310-222-1515")); //true
trace(betterPhoneNumber.test("7242229090")); //true
}
}
}
</source>

==Use ranges with the dash character (-), and you can have multiple ranges in one character class, as well as combine ranges with single characters==



<source lang="java">

package{
import flash.display.Sprite;

public class Main extends Sprite{
public function Main(){
trace("abcdefghijklmnopqrstuvwxyz".match(/[a-cmx-z]/g)); //a,b,c,m,x,y,z

}
}
}
</source>

==Use the exec() method.==



<source lang="java">

package{
import flash.display.Sprite;
import flash.utils.*;
public class Main extends Sprite{
public function Main(){
var reCase:RegExp = new RegExp("abc");
var sVal:String = new String("aBcdefabCdefABC");
var aMatch:Array = reCase.exec(sVal);
aMatch = reCase.exec(sVal);
}
}
}
</source>

← Предыдущая	Версия 09:19, 26 мая 2010
(нет различий)

Flash / Flex / ActionScript/Regular Expressions/RegExp - История изменений

в 09:19, 26 мая 2010

Admin: 1 версия