Learning JavaScript?

Basic syntax, operators, statements and console usage.

Primitive vs reference values, typeof, equality and coercion rules.

var vs let vs const, lexical scope, hoisting and TDZ.

Function declarations, expressions, this binding and arrow functions.

Closures, higher-order functions, partial application and immutability patterns.

Object literals, property descriptors, prototype chain and ES6 classes.

Array methods, iteration protocols, for...of, map/filter/reduce.

Event loop, callbacks, Promises, async/await and microtasks.

DOM tree, querying, event model and common browser APIs.

ES modules, CommonJS, bundlers, try/catch and custom errors.