How to generate a SHA-256 hash with JavaScript

This article goes over how to generate a SHA-256 hexadecimal hash using Node.js and JavaScript in the browser.

Node.js

To generate a SHA-256 hash in Node.js using crypto:

Usage:

Replit demo:

Node.js SHA-256 hash

Browser

To generate a SHA-256 hash in the browser using SubtleCrypto:

Or written in async/await:

Usage:

Replit demo:

JavaScript SHA-256 hash

This article was originally published on remarkablemark.org on August 29, 2021.