JerryScript is an ultra-lightweight

JavaScript JavaScript (), often abbreviated as JS, is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. As of 2022, 98% of Website, websites use JavaScript on the Client (computing), client side ...

engine for the

Internet of things The Internet of things (IoT) describes physical objects (or groups of such objects) with sensors, processing ability, software and other technologies that connect and exchange data with other devices and systems over the Internet or other comm ...

. It is capable of executing ECMAScript 5.1 source code on devices with less than 64 KB of memory. The engine was open sourced on

GitHub GitHub, Inc. () is an Internet hosting service for software development and version control using Git. It provides the distributed version control of Git plus access control, bug tracking, software feature requests, task management, continuous ...

in June 2015. JerryScript is licensed under the Apache License 2.0. In October 2016 the

JS Foundation The OpenJS Foundation is an organization that was founded in 2019 from a merger of JS Foundation and Node.js Foundation. OpenJS Promotes the JavaScript and web ecosystem by hosting projects and funds activities that benefit the ecosystem. The OpenJ ...

was formed and JerryScript is one of the initial projects.

Key characteristics of JerryScript

* Full ECMAScript 5.1 standard compliance * 170K binary size when compiled for

ARM In human anatomy, the arm refers to the upper limb in common usage, although academically the term specifically means the upper arm between the glenohumeral joint (shoulder joint) and the elbow joint. The distal part of the upper limb between the ...

Thumb-2 ARM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of reduced instruction set computer (RISC) instruction set architectures for computer processors, configured ...

* Heavily optimized for low memory consumption * Written in

C99 C99 (previously known as C9X) is an informal name for ISO/IEC 9899:1999, a past version of the C programming language standard. It extends the previous version ( C90) with new features for the language and the standard library, and helps impl ...

for maximum portability * Snapshot support for precompiling

source code to byte code * Mature C

API An application programming interface (API) is a way for two or more computer programs to communicate with each other. It is a type of software Interface (computing), interface, offering a service to other pieces of software. A document or standa ...

, easy to embed in applications ** Projects such as IoT.js are built on top of JerryScript

Support

* Microcontrolers: STM32F4

ESP8266 The ESP8266 is a low-cost Wi-Fi microchip, with built-in TCP/IP stack, TCP/IP networking software, and microcontroller capability, produced by Espressif Systems in Shanghai, China. The chip was popularized in the English-speaking maker culture ...

References

{{Reflist JavaScript engines Internet of things