12个常用的函数技巧

12个常用的函数技巧，有的时候技巧就是这么简单

No.1 Copy content to clipboard:

1. System.setClipboard(strContent);

No.2 Clone an ArrayCollection:

1. //dummy solution( well, it works )
2. var bar:ArrayCollection = new ArrayCollection();
3. for each ( var i:Object in ac ){ 
4. bar.addItem( i );
5. } 
6. // fantastic ! //
7. var bar:ListCollectionView = new ListCollectionView( ListCollectionView( ac ).list );

No.3 Open URL:

1. navigateToURL(new URLRequest('http://ntt.cc'), '_blank'

No.4 Page reload:

1. navigateToURL(new URLRequest("javascript:location.reload();"),"_self")

No.5 Close browse:

1. navigateToURL(new URLRequest("javascript:window.close()"),"_self");

No.6 Set the background alpha to transparent on Alert window:

1. Alert 
2. { 
3. modalTransparency:0.0;  
4. modalTransparencyBlur:0;
5. }

No.7 Set random color：

1. lbl.setStyle('color', 0xffffff*Math.random());

No.8 Trim left of white space

1. public function LTrim(s : String):String 
2. { 
3.   var i : Number = 0;
4.   while(s.charCodeAt(i) == 32 || s.charCodeAt(i) == 13 || s.charCodeAt(i) == 10 || s.charCodeAt(i) == 9) 
5.   { 
6.     i++;
7.   } 
8.   return s.substring(i,s.length);
9. }

No.9 Trim right of white space

1. public function RTrim(s : String):String 
2. { 
3.   var i : Number = s.length - 1;
4.   while(s.charCodeAt(i) == 32 || s.charCodeAt(i) == 13 || s.charCodeAt(i) == 10 ||s.charCodeAt(i) == 9) 
5.   { 
6.     i--;
7.   } 
8.   return s.substring(0,i+1);
9. }

No.10 Trim left and right of white space

1. public function Trim(s : String):String 
2. { 
3.   return LTrim(RTrim(s));
4. }

No.11 get data type:

1. getQualifiedClassName(data)

No.12 Generate check digits

1. private function GenerateCheckCode():String 
2. { 
3.     //init
4.     var ran:Number;
5.     var number:Number;
6.     var  code:String;
7.     var checkCode:String ="";
8.     //get 4 radom
9.    for(var i:int=0; i<4; i++) 
10.    { 
11.        ran=Math.random();
12.        number =Math.round(ran*10000);            //get result like 0.1234
13.        if(number % 2 == 0) 
14.          code = String.fromCharCode(48+(number % 10));        //0's ASCII code is 48
15.        else 
16.          code = String.fromCharCode(65+(number % 26)) ;        // A's ASCII code is 65
17.        checkCode += code;
18.    } 
19.    return checkCode;
20. }