JavaScript typedArray.keys() Method

The typedArray.keys() is an inbuilt function in JavaScript which is used to return a new array iterator containing the keys for each index of the elements of the given typedArray. 

Syntax:

typedArray.keys()

Parameter: This function does not accept anything as parameter. 

Return value: It returns a new array iterator object containing the keys for each index of the elements of the given typedArray. 

Example: JavaScript code to show the working of this function.

javascript

// Creating some typedArrays
const A = new Uint8Array([1, 2, 3, 4, 5]);
const B = new Uint8Array([5, 10, 15, 20]);
const C = new Uint8Array([0, 2, 4, 6, ,8, 10]);
const D = new Uint8Array([1, 3, 5, 7, 9]);

// Calling keys() function
a = A.keys()
console.log(a.next().value);

b = B.keys()
b.next();
console.log(b.next().value);

c = C.keys()
c.next();
c.next();
console.log(c.next().value);

d = D.keys()
d.next();
d.next();
d.next();
console.log(d.next().value);

Output:

0
1
2
3