coderef

BigInt64ArrayBaseline · Widely available

The BigInt64Array and BigUint64Array typed arrays represent 64-bit integers, signed and unsigned respectively.

Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Sep 20, 2021. Widely available since Mar 20, 2024.

How to use ↓Compare browsers

Browser support

DesktopChrome
1–66Not supported
67+Supportedsince May 29, 2018
Current: 155
Edge
12–18Not supported
79+Supportedsince Jan 15, 2020
Current: 154
Firefox
1–67Not supported
68+Supportedsince Jul 9, 2019
Current: 157
Safari
1–14.1Not supported
15+Supportedsince Sep 20, 2021
Current: 27
MobileChrome Android
18–66Not supported
67+Supportedsince May 31, 2018
Current: 155
Firefox Android
4–67Not supported
68+Supportedsince Jul 9, 2019
Current: 157
Safari iOS
1–14.5Not supported
15+Supportedsince Sep 20, 2021
Current: 27

How to use

This feature is Baseline widely available — use it freely, no fallback needed.

Example

Full syntax and examples are on MDN: BigInt64Array.

Feature detection

JS · check before using
if (typeof BigInt64Array !== "undefined") {
  // BigInt64Array is available
}

Documentation (MDN)

Specification

Sub-features

Support for each part of the feature (8). The overall table above shows when the whole feature works.

Sub-featureChromeEdgeFirefoxSafariChrome AndroidFirefox AndroidSafari iOS
BigInt64Array67796815676815
BigInt64Array.BigInt64Array67796815676815
BigUint64Array67796815676815
BigUint64Array.BigUint64Array67796815676815
DataView.getBigInt6467796815676815
DataView.getBigUint6467796815676815
DataView.setBigInt6467796815676815
DataView.setBigUint6467796815676815