1、for(初始值;条件;递增)
for(var i:int = 1;i<=100;i++){
trace(i);
}
2、for(属性名 in 数组/对象)
var chartArray:Array = {"张三","李四","王五","赵六"};
for(var i :String in chartArray){
trace(i);
}
3、for each(项 in 数组/对象)
var chart : Object = {sex:'男',age:'23'};
for each(var i:String in chart){
trace(i);
}