Hash Generation in JavaScript
Learn how to generate cryptographic hashes in JavaScript using the Web Crypto API and Node.js crypto module.
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JavaScript provides cryptographic hashing through the Web Crypto API in browsers and the crypto module in Node.js.
Browser: Web Crypto API
Use crypto.subtle.digest("SHA-256", data) for async hashing. Convert the ArrayBuffer result to hex string for display.
Node.js: crypto module
crypto.createHash("sha256").update(data).digest("hex") provides simple synchronous hashing in Node.js.
Choosing an Algorithm
SHA-256 is recommended for most use cases. MD5 and SHA-1 are deprecated for security purposes but still used for checksums.
Summary
Generate hashes quickly with our online Hash Generator tool.