TypedArray.prototype.entries()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2016.
The entries() method of TypedArray instances returns a new array iterator object that contains the key/value pairs for each index in the typed array. This method has the same algorithm as Array.prototype.entries().
Try it
const uint8 = new Uint8Array([10, 20, 30, 40, 50]);
const eArr = uint8.entries();
eArr.next();
eArr.next();
console.log(eArr.next().value);
// Expected output: Array [2, 30]
Syntax
js
entries()
Parameters
None.
Return value
A new iterable iterator object.
Description
See Array.prototype.entries() for more details. This method is not generic and can only be called on typed array instances.
Examples
>Iteration using for...of loop
js
const array = new Uint8Array([10, 20, 30, 40, 50]);
const arrayEntries = arr.entries();
for (const element of arrayEntries) {
console.log(element);
}
Alternative iteration
js
const array = new Uint8Array([10, 20, 30, 40, 50]);
const arrayEntries = arr.entries();
console.log(arrayEntries.next().value); // [0, 10]
console.log(arrayEntries.next().value); // [1, 20]
console.log(arrayEntries.next().value); // [2, 30]
console.log(arrayEntries.next().value); // [3, 40]
console.log(arrayEntries.next().value); // [4, 50]
Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification> # sec-%typedarray%.prototype.entries> |