Calculate SHA-256 hash in JavaScript
Calculate a SHA-256 hash in JavaScript using native APIs in both the browser and Node.js.
Node.js Snippets
The Node.js snippet collection contains JavaScript utilities for Node.js 18.x. It includes helper functions related to server-side code and filesystem operations, while general-purpose helpers can be found in the JavaScript snippet collection. All snippets can be used with the ESM syntax.
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JavaScript · Create a static file server with Node.js
Create your own static file server with Node.js in just 70 lines of code.
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JavaScript · Generate a UUID in JavaScript
Generate a UUID in JavaScript using native APIs in both the browser and Node.js.
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JavaScript · Read a file and return an array of lines
Parse a text file and return an array of lines, synchronously or asynchronously, using Node.js.
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JavaScript · Introduction to the Node.js test module
The Node.js test module is a new testing tool that's still in its early stages. Learn more about it in this short introduction.
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JavaScript · How can I save a JSON object to a file using JavaScript?
Learn how to write a JSON object to a file, both using Node.js and in the browser.
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JavaScript · Command-line arguments in Node.js
Learn how to extract command-line arguments passed to a Node.js script.
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JavaScript · How can I check if a value implements a stream in Node.js?
Learn how to type check for different types of streams in Node.js.
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JavaScript · Introduction to Semantic Versioning (SemVer)
Learn how semantic versioning works and how to use it to correctly version your software.
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JavaScript · Check if the current JavaScript environment is Node.js or a browser
Determine if the current JavaScript environment is Node.js or a browser.
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JavaScript · Convert a tilde path to an absolute path in Node.js
Ever wanted to convert a tilde path to an absolute path? Here's how you can do it in JavaScript.
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JavaScript · Colorize text in the Node.js terminal
Use special Unicode characters to print text in color in the console.
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JavaScript · Create a directory if it doesn't exist using Node.js
Learn how to create a directory using Node.js, if it doesn't exist.
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JavaScript · Can I reload a module in Node.js?
Ever wanted to reload a module in Node.js? Here's how you can do it.
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JavaScript · Debugging Node.js using Chrome Developer Tools
Did you know you can use Chrome Developer Tools to debug your Node.js code? Find out how in this short guide.