You already know about projections, datums, and when not to choropleth, come see how the other nerd-half live and learn the basics of the building web applications with JavaScript. We will cover essential JavaScript concepts you will need to know when working with the ArcGIS API for JavaScript. We will also talk about the best way to learn JavaScript moving forward, how to keep your skills up to date, when (and how) to integrate new tools and frameworks into your projects, and how to navigate the exploding JavaScript ecosystem.