Open Source JavaScript Libraries - Page 14
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JavaScript Libraries
View 74 business solutionsBrowse free open source JavaScript Libraries and projects below. Use the toggles on the left to filter open source JavaScript Libraries by OS, license, language, programming language, and project status.
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JS Bits
JavaScript concepts with code
JS Bits is an open-source collection of JavaScript concepts explained through concise code examples and clear explanations that serve as a practical learning resource for both beginners and experienced developers. It breaks down essential parts of the language — such as core syntax, quirky behaviors, functions, scope, closures, asynchronous patterns, and commonly misunderstood features — into digestible pieces that make it easier to internalize how JavaScript really works in modern development. The repository is organized by topic so that learners can jump directly into areas they want to reinforce or explore, and community contributions are welcomed to expand coverage or add alternative explanations. Rather than being a formal textbook, js-bits acts like a developer’s code-centric cheat sheet that helps bridge the gap between abstract language specifications and real usage patterns in the browser or Node.js. -
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JSDo5an is simple JavaScript library for validating user input. All you have to do is to specify the validation rules.Documentation, tutorials on how to use the API can be found at http://www.khaledinho.com/main/?page_id=43
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JSNAV - a library that allows to specify and save some javascript calls in the page's URI. This library helps to standardize the coding javascript URI handler in the anchors. Also it helps to keep the classic navigation anchors.
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JScriptTouch is an SDK which allows developers quickly create full featured applications for iPhone platform using javascript.
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You want to develop a javascript game or make your webpages dynamic. This project creates freely available javascript interfaces such as one to help you create board games, one that contains several animations for images, ... Programmers, enjoy!
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JavaScript & Node.js Testing
Comprehensive and exhaustive JavaScript & Node.js testing
This project compiles practical advice for testing JavaScript applications across the stack, emphasizing clarity, speed, and reliability over dogma. It distinguishes between different kinds of tests—unit, integration, end-to-end—and shows when each is appropriate given time and risk constraints. The guide focuses on removing flakiness by isolating side effects, controlling randomness, and stabilizing async code paths. It also demonstrates test design techniques like arranging test data, using expressive assertions, and structuring test suites for readability and discoverability. Tooling agnosticism is a theme: patterns are illustrated with popular tools but written to survive framework churn. The end goal is a test suite that acts as living documentation while catching regressions quickly and deterministically. -
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JavaScript Array Explorer
A resource to figure out what JavaScript array method would be best
Array Explorer is an educational web-based resource created by Sarah Drasner to help developers understand and select the appropriate JavaScript array method (like map, filter, reduce, find, etc.) when they’re stuck wondering “which one should I use?” Instead of diving into endless docs, you can use the interactive tool to specify what you’re trying to accomplish—e.g., “remove items,” “transform items,” “find something,” “aggregate results”—then see which methods match and get live code examples. The tool provides visual examples, explanations of method semantics, and code snippets you can copy into your own project. Because many JavaScript learners struggle with which array method to choose or misuse them, this resource offers an approachable way to learn by doing and exploring rather than memorizing. The front-end is friendly and responsive, with filtering UI that lets you narrow based on the kind of task you’re performing. -
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JavaScript Load Image
Load images provided as File or Blob objects or via URL
JavaScript-Load-Image is a client-side image loading and processing library that focuses on turning File/Blob objects or remote URLs into HTML <img> or <canvas> elements, optionally transformed in the process. It is often used in upload flows where images need to be previewed, resized, rotated, or cropped before being sent to a server, reducing bandwidth and improving user experience. The library can interpret image metadata, including Exif and IPTC tags, and can extract embedded thumbnails when present, which is handy for building fast image pickers or galleries. One of its key capabilities is correcting Exif Orientation, so photos taken on mobile devices appear upright without additional server-side processing. It also offers the option to preserve or restore image headers when resizing, which helps retain metadata or orientation information in the re-encoded image. -
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JavaScript Object Graph for Java is a library designed to simplify working with JSON objects in Java code.
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Javascript CRT
Cross browser Javascript library that provides old style text mode
Cross browser Javascript library that provides old style text mode -
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Javascript Moony Parser
library: parsing text by given grammar in javascript
This is a javascript library for parsing texts. The library accepts minimalistic moony grammar language and parses given text by the grammar. It is an implementation of "Earley" parser which makes it context free grammar complete. Instructions are bundled in download. -
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JsAction
JsAction is a small event delegation library
JSAction is a JavaScript framework developed by Google that provides a structured, event-driven architecture for managing user interactions in large-scale web applications. It simplifies event handling by declaratively binding actions to DOM elements through HTML attributes, enabling clean separation between markup and behavior. JSAction helps improve performance, maintainability, and reliability by minimizing the use of inline scripts and global event listeners. It is especially useful in complex front-end environments where efficient event delegation and well-defined interaction flows are crucial. -
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Jupyter Nbextensions Configurator
A jupyter notebook serverextension providing config interfaces
A server extension for jupyter notebook which provides configuration interfaces for notebook extensions (nbextensions). The jupyter_nbextensions_configurator jupyter server extension provides graphical user interfaces for configuring which nbextensions are enabled (load automatically for every notebook). In addition, for nbextensions which include an appropriate yaml descriptor file (see below), the interface also renders their markdown readme files, and provides controls to configure the nbextensions' options. -
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Knwl.js
A .js library for parsing text for specific information
Knwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more. Parser plugins are what make Knwl.js tick and give it new parsing abilities. There are many already available under ./default_plugins for a number of tasks. If you're interested in developing plugins for Knwl.js, ./plugin_development.md is a great place to start. You can optionally specify a language in the first parameter. This helps plugins identify and better suit particular languages. A packaged version of Knwl.js for the browser with default plugins is available in the ./dist directory. What's awesome about the new version of Knwl.js is that it makes it much easier for anyone with a little knowledge of JS to build plugins. These plugins offer new parsing abilities for Knwl.js that otherwise wouldn't exist. -
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Krajee bootstrap-star-rating
A simple yet powerful JQuery star rating plugin with fractional rating
A simple yet powerful JQuery star rating plugin for Bootstrap that supports advanced features like fractional star fill and RTL input support. Developed with a focus on utilizing pure CSS-3 styling to render the control. The plugin uses Bootstrap markup and styling by default, but it can be overridden with any other CSS markup. Ability to size the rating control to any size including the stars, caption, and clear button. Five prebuilt size templates are available xl, lg, md, sm, and xs. However one can have their own size configured through a simple CSS manipulation. You can use the HTML 5 number input for polyfill and the plugin will automatically use the number attributes like min, max, and step. However, number inputs have a problem with decimal values on the Chrome Browser. Specifically uses Bootstrap 3.x styles & glyphs. Can be combined to work better for Bootstrap-styled projects (or input group addons). -
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LABjs
Loading And Blocking JavaScript
LABjs is a lightweight JavaScript loader focused on speeding up page performance by controlling how and when scripts download and execute. It provides an expressive API to load multiple files in parallel while guaranteeing execution order, so dependent scripts don’t break. By decoupling fetch from execute, it avoids the blocking behavior of traditional tags and helps reduce perceived load time. LABjs embraces a “load groups, then wait” model that makes dependency management clear without a separate build step. It’s designed to work across a wide range of browsers, including older ones, which is why it relies on robust feature detection and time-tested loading techniques. The library is intentionally small and framework-agnostic, so it can be dropped into almost any stack to orchestrate client-side assets more predictably. -
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Laravel QuestionAnswer
Vote based Question & Answer site built using Laravel 5.4
Vote-based Question and answer site built using Laravel 5.4, material design, x-editable, jQuery Upvote, and email/database notifications. Registered users can submit questions, answer questions, vote on questions & answers, and when an answer is posted to a question the author is notified via email. Users will also be notified about votes, but only viewable in their profile. -
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Libraries for Vue
Vue Libraries
Libraries for Vue - Grid. Sortable grid with pagination and column filtering. -
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Libros de Programación en Español
List of programming books in Spanish for free
Libros de Programación en Español is a curated list of free programming books in Spanish, organized by topic and technology so learners can find high-quality materials without cost. The README is structured as an index with general programming books, followed by sections for specific languages such as JavaScript, TypeScript, Python, Ruby, Rust, PHP, Haskell, Go, Kotlin, Java, and R.Each entry includes the book title, author, and a link to the official or legal free version (PDF, HTML, eBook, etc.), focusing on resources that are legitimately available. Beyond languages, the list also covers frameworks and libraries (like React and Qwik), tools (such as Git), and databases (SQL), grouping them in separate sections for easier browsing. The repository includes a code of conduct and contributing guidelines, inviting the community to help maintain the catalog and keep links up to date. -
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MEAN
For simple and scalable fullstack js applications
The MEAN stack uses Mongo, Express, Angular(6) and Node for simple and scalable fullstack js applications. The mean stack is intended to provide a simple and fun starting point for cloud native fullstack javascript applications. MEAN is a set of Open Source components that together, provide an end-to-end framework for building dynamic web applications; starting from the top (code running in the browser) to the bottom (database). The stack is made up of MongoDB, with document database, used by your back-end application to store its data as JSON (JavaScript Object Notation) documents. Also with Express (sometimes referred to as Express.js), with back-end web application framework running on top of Node.js. As well as Angular (formerly Angular.js), which is a front-end web app framework that runs your JavaScript code in the user's browser, allowing your application UI to be dynamic.
