Regular expression test

programming flash
1

I am creating a simple application and wanted to use a function to match any given regular expression to any given string, so I created the following function:

function validateStr(regexp:RegExp, strVal:String):Boolean{
   if(regexp.exec(strVal)==null)
      return false;
   else
      return true;
}

But I was wondering, can’t I simply replace it with

function validateStr(regexp:RegExp, strVal:String):Boolean{
   return regexp.test(strVal);
}

I am relatively new to ActionScript, so I do not know if both would present the same behavior.