Iterator.prototype[Symbol.iterator]()

¥Syntax

iterator[Symbol.iterator]()

¥Parameters

没有任何。

¥None.

¥Return value

this 的值，即迭代器对象本身。

¥The value of this, which is the iterator object itself.

¥Examples

¥Iteration using for...of loop

请注意，你很少需要直接调用此方法。[Symbol.iterator]() 方法的存在使得内置迭代器 iterable，像 for...of 循环这样的迭代语法会自动调用该方法来获取要循环的迭代器。

¥Note that you seldom need to call this method directly. The existence of the [Symbol.iterator]() method makes built-in iterators iterable, and iterating syntaxes like the for...of loop automatically call this method to obtain the iterator to loop over.

const arrIterator = [1, 2, 3].values();
for (const value of arrIterator) {
  console.log(value);
}
// Logs: 1, 2, 3

¥See also

• Iterator
• Symbol.iterator
• 迭代协议