Parkinsonâs Disease (PD) is a chronic, progressive disorder that affects nerve cells deep in the brain responsible for planning and controlling body movement. Dopamine is a chemical used in body movement.
Chart.js is a JavaScript library that allows you to draw different types of charts by using the HTML5 canvas element. Since it uses canvas, you have to include a polyfill to support older browsers. The one suggested by the author is ExplorerCanvas, so you may want to stick with it.
JS is a file extension for a JavaScript source code file format. A JS file is used mainly to run client side JavaScript code on a webpage. The JS file contains all the HTML HEAD and BODY objects in the tags of an HTML page.