Javascript BigInt64Array keys()

Introduction

The Javascript BigInt64Array keys() method returns an Iterator object for each index in the array. 

arr.keys()

Iteration using for...of loop 

var arr = new BigInt64Array([10n, 20n, 30n, 40n, 50n]);
var eArray = arr.keys();
for (let n of eArray) {
  console.log(n);/*w w  w . j  a v  a2  s . c om*/
}

Alternative iteration 

var arr = new BigInt64Array([10n, 20n, 30n, 40n, 50n]);
var eArr = arr.keys();
console.log(eArr.next().value); // 0
console.log(eArr.next().value); // 1
console.log(eArr.next().value); // 2
console.log(eArr.next().value); // 3
console.log(eArr.next().value); // 4



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