Array.prototype[Symbol.iterator]()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. Itâs been available across browsers since 2016å¹´9æ.
Symbol.iterator 屬æ§çåå§å¼è values() 屬æ§çåå§å¼çºç¸åççå½å¼ç©ä»¶ã
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arr[Symbol.iterator]()
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js
var arr = ["w", "y", "k", "o", "p"];
var eArr = arr[Symbol.iterator]();
// your browser must support for..of loop
// and let-scoped variables in for loops
for (let letter of eArr) {
console.log(letter);
}
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js
var arr = ["w", "y", "k", "o", "p"];
var eArr = arr[Symbol.iterator]();
console.log(eArr.next().value); // w
console.log(eArr.next().value); // y
console.log(eArr.next().value); // k
console.log(eArr.next().value); // o
console.log(eArr.next().value); // p
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| Specification |
|---|
| ECMAScript® 2027 Language Specification # sec-array.prototype-%symbol.iterator% |