Needed helps on html button to trigger a function

[bko]

Hi @Genius

Please take a look at this (older) tutorial, particularly the HTML/Javascript part.

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…

First off, you probably need to load JQuery to use $.post.

Second, your URL format is not correct for a POST request to call a function. You should have just the function name "led" at the end of the URL. You are already passing the access_token in the parameters.