# JerryScript

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Lightweight JavaScript engine

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JerryScript Developers Samsung OSG, University of Szeged Written in C Type JavaScript engine License Apache 2.0[1] Website jerryscript.net Repository github.com/jerryscript-project/jerryscript

- [Free and open-source software portal](https://en.wikipedia.org/wiki/Portal:Free_and_open-source_software)
- [Internet portal](https://en.wikipedia.org/wiki/Portal:Internet)

**JerryScript** is an ultra-lightweight [JavaScript](/source/JavaScript) engine for the [Internet of things](/source/Internet_of_things). It is capable of executing [ECMAScript 5.1](/source/ECMAScript) source code on devices with less than 64 KB of memory.

The engine was open sourced on [GitHub](/source/GitHub) in June 2015. JerryScript is licensed under the [Apache License 2.0](/source/Apache_License). In October 2016 the [JS Foundation](/source/Linux_Foundation#JS_Foundation) was formed and JerryScript is one of the initial projects.[2]

## Key characteristics of JerryScript

- Full [ECMAScript 5.1](/source/ECMAScript) standard compliance

- 170K binary size when compiled for [ARM](/source/ARM_architecture) [Thumb-2](/source/ARM_architecture#Thumb-2)

- Heavily optimized for low memory consumption

- Written in [C99](/source/C99) for maximum portability

- Snapshot support for precompiling [JavaScript](/source/JavaScript) source code to byte code

- Mature [C](/source/C_(programming_language)) [API](/source/Application_programming_interface), easy to embed in applications - Projects such as IoT.js are built on top of JerryScript

## Support

- Microcontrolers: [STM32F4](/source/STM32F4) [ESP8266](/source/ESP8266)[3]

## References

1. **[^](#cite_ref-1)** ["LICENSE at master"](https://raw.githubusercontent.com/jerryscript-project/jerryscript/master/LICENSE). Github.

1. **[^](#cite_ref-2)** ["OpenJS Foundation"](https://js.foundation/announcements/2016/10/17/Linux-Foundation-Unites-JavaScript-Community-Open-Web-Development/).

1. **[^](#cite_ref-3)** ["Introduction to IoT.JS"](https://www.slideshare.net/SamsungOSG/introduction-to-iotjs-60814606/12). 12 April 2016.

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Adapted from the Wikipedia article [JerryScript](https://en.wikipedia.org/wiki/JerryScript) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/JerryScript?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.