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Underscore.js is a utility-belt library for JavaScript that provides support for the usual functional suspects (each, map, reduce, filter...) without extending any core JavaScript objects.
For Docs, License, Tests, and pre-packed downloads, see: https://underscorejs.org
For support and questions, please consult our security policy, the gitter channel or stackoverflow
Underscore is an open-sourced component of DocumentCloud: https://github.com/documentcloud
Many thanks to our contributors: https://github.com/jashkenas/underscore/contributors
You can support the project by donating on Patreon. Enterprise coverage is available as part of the Tidelift Subscription.
This project adheres to a code of conduct. By participating, you are expected to uphold this code.
Lodash is a modern JavaScript utility library delivering modularity, performance, & extras. It is often considered as a drop-in replacement for Underscore with additional features and improved performance.
Ramda is a practical functional library for JavaScript programmers. It emphasizes a purer functional style, immutability, and function composition, making it quite different from Underscore in terms of API design and usage patterns.
Lazy.js is a functional utility library similar to Underscore and Lodash, but with a focus on lazy evaluation, which can lead to significant performance improvements for certain types of operations on large datasets.
FAQs
JavaScript's functional programming helper library.
The npm package underscore receives a total of 18,302,402 weekly downloads. As such, underscore popularity was classified as popular.
We found that underscore demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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