webOS IoT is ONLY supported from webOS OSE 2.4.0 to webOS OSE 2.18.0. We plan to replace webOS IoT with Matter in the future release.

This page explains general concepts related to JavaScript services (JS services) for webOS IoT.


The typical characteristics of a JS service on webOS IoT are as follows:

  • Written in JavaScript and created using Node.js.
  • Runs in the background.
  • Provides additional access to platform features such as low-level networking, file system access, and binary data processing.