Learn Modern Javascript From Ground Zero Chapter 10 Working With Objects

Summary

Optional chaining, nullish coalescing, destructuring and spread, and the == vs === question settled for good. Well-known symbols, Proxy and Reflect, the new using declaration for automatic cleanup, and how Building an app or preparing for a The iteration protocol behind for…of, generators with yield, the new lazy iterator helpers, and for await. Float precision, UTF-16 strings, template tags, Date pitfalls, the new Temporal API, and Intl formatting for any language. Arrow functions, default and rest parameters, the rules that decide this, and closures, the idea behind private state. Why let and const replaced var, what hoisting and the temporal dead zone really are, and