var dataSource:Object = {};
dataSource[1] = 1000;
dataSource[2] = 2000;
dataSource[3] = 3000;
dataSource[4] = 4000;
console.log("for each遍歷");
for each(var value:int in dataSource){
console.log("for each"+"-"+value);
}
console.log("for in遍歷");
for (var key:int in dataSource){
console.log("for in"+"-"+key);
}
根據代跑跑出來的結果可以發現,for each遍歷的是dataSource中的每一項value
for in 遍歷的是dataSource中每一項的key值