This document discusses using the Go programming language to build full-stack applications that can run on the web using GopherJS. GopherJS compiles Go code to JavaScript, allowing Go code to run in browsers. It supports key Go features like goroutines and channels. The document provides examples of writing Hello World apps, exporting Go functions to JavaScript, handling callbacks, and measuring performance. It also discusses bindings for DOM manipulation, jQuery, and other JavaScript libraries as well as things to watch out for like import size and blocking callbacks. The document recommends designing applications with a custom bytecode format that can be translated to different platforms and languages.