The Complete 2023 JavaScript MasterClass™: Beginner Friendly

Learn how to use JavaScript arrays, mutate them with push, pop, shift, unshift, reverse, sort (including custom compare), concat, and find, covering length, isArray, indices, and mixed data.

Explore switch statements in JavaScript as scalable alternatives to if-else, using cases, default handling, and breaks to control program flow.

Master dom selectors for single elements by using getElementById and querySelector to retrieve and modify a single node. Access the class list and adjust colors with style.

Explore event bubbling and delegation in JavaScript, showing how events bubble to parent elements and how a top-level listener targets child actions such as delete actions.

Explore using the prototype inside a constructor to add extension methods to custom constructors and move methods to the prototype for shared inheritance and hasOwnProperty checks.

Explore how to create objects from custom prototypes using object.create, including extension methods and property initialization with a properties parameter and object literals.

Create a book library app using a book constructor and a user interface constructor to add books to a dynamic table, validate empty fields and numeric ISBN, and show alerts.

Understand how rest APIs enable client–server communication through http requests like get, post, put, delete, and patch, using endpoints and json data.

Explore promises in ES6 by turning asynchronous operations into promise objects with pending, resolved, and rejected states, and learn to use then, catch, finally, while converting callback-based code to promises.

Populate the user interface with API weather data, convert kelvin to Celsius and Fahrenheit, and save the location to local storage, creating a responsive, user-friendly weather experience.

Master error handling with try and catch and learn regular expressions, evaluation functions, and character sets, while building a weather app with api keys for authentication and form validation.

Learn to use regular expressions as search and validation patterns in JavaScript. Apply evaluation functions like exec, test, match, search, and replace to build practical form validation.

Learn to use character sets and quantifiers to group and match letters, digits, and symbols with case sensitivity options. Explore ranges, negation, anchors, and counts with {n}, {n,m}, and {n,}.

Master shorthand character classes in regular expressions, using backslash w, W, d, D, s, S and plus quantifiers to match word, non word, digit and whitespace characters.

Explore iterators and generators in JavaScript, learning how to build an iterator that yields values and a generator using yield, plus document object model controls to navigate a names array.

Master array and object destructuring by assigning multiple values at once, using the rest pattern and the spread operator, and accessing keys like name, age, and job.