AS3 中字符串的format功能实现

string str1 = "杰卫，这里有{0}个苹果，和{1}个香蕉！{0}个苹果{3} 元，{1}个香蕉{4} 元，一共{2}钱";
string str2 = "Hei jave, there are {0} apples，and {1} banana！ {2} dollar all together";
Console.WriteLine(string.Format(str1, 5, 10, 20, 7, 13));
Console.WriteLine(string.Format(str2, 5, 10, 20));

private function formate(str:String, ...args):String{
for(var i:int = 0; i<args.length; i++){
str = str.replace(new RegExp("\\{" + i + "\\}", "gm"), args[i]);
}
return str;
}

var str1:String = "杰卫，这里有{0}个苹果，和{1}个香蕉！{0}个苹果{3} 元，{1}个香蕉{4} 元，一共{2}钱";
                        var str2:String = "Hei jave, there are {0} apples，and {1} banana！ {2} dollar all together";
                        
                        
                        trace(formate(str1, 5, 10, 20, 7, 13));
                        trace(formate(str2, 5, 10, 20));