JavaScript is interactive. Here is a JavaScript chess board to practise on. You can move the pieces by clicking their present locations then clicking on their destinations. Reload the page to start a new game. On a computer, you may have to reduce the screen size to see the whole board without scrolling.
JavaScript has graphics. Here is a programming language written in JavaScript. It is a reduced version of Padscript, which is available from the Google Play Store. It is a simple introduction to programming, written in JavaScript, that produces png images. Find out if you like programming.
JavaScript can interact with your device. Here it shows the time according to your system on an analog clock wherever you are. It is also is an example of JavaScript animation.
Bouncing balls. Another example of JavaScript animation. JavaScript is too slow for such animation - or is it? You can be the judge.