JavaScript Lessons

JavaScript Fundamentals

1: Adding JavaScript to web pages

Efficiently adding JavaScript code to a web page, and working with the JavaScript Console in your web browser’s Developer Tools.

2: Variables and literals

Working with string, numeric and boolean variables, assigning values with the const and let keywords, and using the typeof opertor to investigate a variable’s type.

3: Working with strings

Working with string index positions and length, joining and slicing strings, querying strings, and replacing characters.

4: Working with numbers

Testing for numbers with isNaN, using the increment and decrement operators, and performing arithmetic with correct operator precedence.

5: Objects, properties, and methods

Exploring the Math object and its various methods for working with integers, floats, maximum and minimum vales, and generating random numbers.

Event Handling in JavaScript

Event Handlers

Invoking functions using event handlers in the HTML file, or with anonymous or arrow functions in the JavaScript code.

Event Listeners

Invoking functions with event listeners, using external function declarations or internal anonymous or arrow functions.

Working with the Event object

Invoking functions with event listeners, using external function declarations or internal anonymous or arrow functions.

Event bubbling and capture

Understanding how events are propagated downwards (capture) and then back upwards (bubbling) through the DOM.

Asychronous JavaScript

Introduction to the Fetch API

Using the Promise and Response objects of the Fetch API and get plain-text and JSON formatted data from web servers.

Installing Node.js

Installing Node.js and the Node Package Manager (npm) on your local machine.

Introduction to Express

Building a basic Express app runnng on a Node.js server that can serve a response to a GET request from a web browser.