javascript – 是否可以將ECMAScript 6生成器重置為初始狀態？

我的問題是：給定提供的(非常簡單的)生成器,是否可以將發生器返回到原來的狀態再次使用？

var generator = function*() {
yield 1;
yield 2;
yield 3;
};

var iterable = generator();

for (let x of iterable) {
console.log(x);
}

// At this point, iterable is consumed.
// Is there a method for moving iterable back
// to the start point by only without re-calling generator(),
// (or possibly by re-calling generator(), only by using prototype 
//or constructor methods available within the iterable object)
// so the following code would work again?

for (let x of iterable) {
console.log(x);
}

我希望能夠將迭代傳遞給其他範圍,迭代它,做一些其他的東西,然後可以在同一範圍內再次迭代.

如果你的意圖是

to some other scope, iterate over it, do some other stuff, then be able to iterate over it again later on in that same scope.

那麼你不應該嘗試的只是傳遞迭代器,而是通過生成器：

var generator = function*() {
yield 1;
yield 2;
yield 3;
};

var user = function(generator){

for (let x of generator()) {
console.log(x);
}

for (let x of generator()) {
console.log(x);
}
}

或者只是做一個“迴圈”迭代器,並在迭代時檢查

var generator = function*() {
while(true){
yield 1;
yield 2;
yield 3;
}
};

for( x in i ){
console.log(x);
if(x === 3){
break;
}
}