Flash / Flex / ActionScript/Regular Expressions/Email Address

Determining whether a string contains a valid email address format

   <source lang="java">

package{

 import flash.display.Sprite;
 
 public class Main extends Sprite{
   public function Main(){
       var sEmail:String = new String("someone@someserver.ru");
       var bValidEmail:Boolean = true;
       var nAmpIndex:int = sEmail.indexOf("@");
       var nDotIndex:int = sEmail.lastIndexOf(".");
       if(nAmpIndex == -1 || nDotIndex == -1) {
         bValidEmail = false;
       }
       if(!(nAmpIndex > 0)) {
         bValidEmail = false;
       }
         if(!(nDotIndex > nAmpIndex)) {
       bValidEmail = false;
       }
       if(!(nDotIndex < sEmail.length - 1) || !(nDotIndex > nAmpIndex + 1)) {
         bValidEmail = false;
       }
       trace(bValidEmail);
       
   }
 }

}

       </source>
   
  

Using a regular expression to determine whether a string contains a valid email address format

   <source lang="java">

package{

 import flash.display.Sprite;
 
 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>