Baseline Widely available
The keys()
method of TypedArray
instances returns a new array iterator object that contains the keys for each index in the typed array. This method has the same algorithm as Array.prototype.keys()
.
const uint8 = new Uint8Array([10, 20, 30, 40, 50]);
const keys = uint8.keys();
keys.next();
keys.next();
console.log(keys.next().value);
// Expected output: 2
Syntax Parameters
None.
Return valueA new iterable iterator object.
DescriptionSee Array.prototype.keys()
for more details. This method is not generic and can only be called on typed array instances.
const arr = new Uint8Array([10, 20, 30, 40, 50]);
const arrKeys = arr.keys();
for (const n of arrKeys) {
console.log(n);
}
Alternative iteration
const arr = new Uint8Array([10, 20, 30, 40, 50]);
const arrKeys = arr.keys();
console.log(arrKeys.next().value); // 0
console.log(arrKeys.next().value); // 1
console.log(arrKeys.next().value); // 2
console.log(arrKeys.next().value); // 3
console.log(arrKeys.next().value); // 4
Specifications Browser compatibility See also
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HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4