Flex 中 12 个简单但是很有用的函数

   No matter what kind language using programmer will always accumulate many useful and daily using function with rich in development experience day by day. And then the accumulation become to a library at last. Of course it’s include the flex programmers. Following is some very basic, very simple functions which I’ve collected. How about you? If have any proudly and recommendable functions? Then, don’t only stock in your head, leave your comments. Let’s share.

No.1 Copy content to clipboard: 



System.setClipboard(strContent);



No.2 Clone an ArrayCollection: 



//dummy solution( well, it works ) 

var bar:ArrayCollection = new ArrayCollection(); 

for each ( var i:Object in ac ){  

bar.addItem( i ); 

}  

// fantastic ! // 

var bar:ListCollectionView = new ListCollectionView( ListCollectionView( ac ).list );

No.3 Open URL: 



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



No.4 Page reload: 



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



No.5 Close browse: 



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



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



Alert  

{  

modalTransparency:0.0;   

modalTransparencyBlur:0; 

}



No.7 Set random color： 



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



No.8 Trim left of white space 



public function LTrim(s : String):String  

{  

  var i : Number = 0; 

  while(s.charCodeAt(i) == 32 || s.charCodeAt(i) == 13 || s.charCodeAt(i) == 10 || s.charCodeAt(i) == 9)  

  {  

    i++; 

  }  

  return s.substring(i,s.length); 

}



No.9 Trim right of white space 



public function RTrim(s : String):String  

{  

  var i : Number = s.length - 1; 

  while(s.charCodeAt(i) == 32 || s.charCodeAt(i) == 13 || s.charCodeAt(i) == 10 ||s.charCodeAt(i) == 9)  

  {  

    i--; 

  }  

  return s.substring(0,i+1); 

}



No.10 Trim left and right of white space 



public function Trim(s : String):String  

{  

  return LTrim(RTrim(s)); 

}



No.11 get data type: 



getQualifiedClassName(data)

No.12 Generate check digits 



private function GenerateCheckCode():String  

{  

    //init 

    var ran:Number; 

    var number:Number; 

    var  code:String; 

    var checkCode:String =""; 

    //get 4 radom 

   for(var i:int=0; i<4; i++)  

   {  

       ran=Math.random(); 

       number =Math.round(ran*10000);            //get result like 0.1234 

       if(number % 2 == 0)  

         code = String.fromCharCode(48+(number % 10));        //0's ASCII code is 48 

       else  

         code = String.fromCharCode(65+(number % 26)) ;        // A's ASCII code is 65 

       checkCode += code; 

   }  

   return checkCode; 

}

转自:http://blog.chinahr.com/blog/srivatsa/post/89728