Local server in node.js example

[ScruffR]

There are tutorials that show how that is done via Particle.function() or Particle.subscribe() (previously Spark.xxxx()) in the Tutorials section.

Tutorial: Spark Variable and Function on One Web Page

Let’s say you have a Spark core with both a Spark variable and a Spark function. In my case, I have the world’s simplest servo control sketch, using the nice miniature servo in the Spark Maker Kit. Using these parts, we will build a servo that you can control from a web page anywhere and monitor the position of the servo too! Here’s a preview of the finished tutorial: [image] There is a coarse adjust slider, two fine adjust buttons, and the current position of the servo is displayed. That…

Or even in the docs
https://docs.particle.io/reference/javascript/
https://docs.particle.io/reference/javascript/#callfunction
https://docs.particle.io/reference/javascript/#publishing-event