easy to explain, and each part plays a well-defined role. A typical real program grows organically. New pieces of functionality are added as new needs come up. Structuring—and preserving structure—is ...

setTimeout guarantees a minimum delay — not an exact one. The callback cannot run until the Call Stack is empty, so a busy main thread makes timers lie. JavaScript is single-threaded — there is only ...

. The section on media elements provides detailed coverage of the and elements. Like the first chapter, Chapter 2 focuses mostly on a general web concept, in this case Cascading Style Sheets (CSS).