Learn the new "HTML5" JavaScript APIs: Canvas, WebSocket, WebRTC, Web Workers, File API, Geolocation, Web Storage, etc. They're relatively easy to learn, well-

Learn the new "HTML5" JavaScript APIs: Canvas, WebSocket, WebRTC, Web Workers, File API, Geolocation, Web Storage, etc. They're relatively easy to learn, well-documented, and are pretty in demand on the job market. If you want to take things a step up, learn ES6 JavaScript. It has a lot of very nice improvements, but is a steeper learning curve than just learning new JS APIs. Regardless of what you do, learn how to use modern, vanilla JS in place of jQuery. There is often no reason to use jQuery these days if you're targeting modern browsers. With `document.querySelector`, you can even replicate the selection capabilities of the jQuery `$`.