Modern JavaScript ES6

Explore how let allows reassignment, how const raises an assignment error and enforces immutability, and how block scope confines let and const inside blocks.

Explore function declarations, function expressions, and arrow functions in JavaScript, including syntax, parameters, and return values, and compare hoisting behavior between declarations and expressions.

Explore arrow functions in JavaScript, illustrating parameter handling, implicit return, single-parameter shorthand, and why arrow functions lack the arguments object compared with regular functions.

Explore how ES6 classes use constructors as special methods invoked by new, turning a class into a blueprint with properties and methods, and how the this keyword accesses object properties.

Explore ES6 template literals to embed expressions with ${} and create multi-line strings using backticks, improving code readability and maintainability.

Explore how the this keyword behaves in arrow functions and how lexical this inherits context to make callbacks and timers reliable.

Explore the spread operator in JavaScript ES6, using three dots to copy, merge, and add elements to arrays and objects. Create shallow copies and update properties with concise, readable code.

Explore how the rest operator (three dots) groups remaining array elements or object properties into a new array or object, using destructuring with arrays and objects in ES6.

Explore array destructuring in JavaScript to unpack values from arrays into variables in a single step, including skipping elements, using the rest operator, default values, and handling nested arrays.

Object destructuring extracts properties from an object and assigns them to variables in one step. Master renaming, default values, nested objects, and the rest operator for remaining properties.

Master how promises empower asynchronous JavaScript with the promise constructor, resolve, reject, and the then and catch handlers. Grasp pending, fulfilled, and rejected states to manage success and failure.

Explore async and await in JavaScript to write asynchronous code that looks synchronous, return promises, and handle delays and errors with try/catch.

Explore JavaScript modules, exporting and importing functions, constants, and objects, and mix named and default exports to share data across app.js and main.js.

Learn how to create and use generator functions in JavaScript, yielding values and pausing execution. See how next resumes the generator, how for-of iterates, and how return signals completion.