JavaScript Lessons

JavaScript Fundamentals

Adding JavaScript to a web page

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

Variable types in JavaScript

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.

Working with strings

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

Working with numbers

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

Objects, properties, and methods

Exploring the navigator (web browser) object, the window object, the location (web address) object, the document (web page) object, and the console (DevTools) object.

Working with the Math object

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

Testing Conditions

Working with Conditions

Creating decision-making structures in JavaScript with logical and relational operators.

Arrays and Loops

Arrays: an introduction

Creating arrays in JavaScript, populating them with elements, reading and updating array elements, and looping through arrays.

Arrays: basic methods

Using basic array methods to add and remove array elements, copy a part of an array, and convert an array to a comma-separated string variable.

The fetch() API

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

Data Tables

Creating and styling HTML tables, adding and deleting table rows with JavaScript, and populating a table from an array of objects.

Nodejs

Installing the Nodejs Version Manager (nvm) and installing Nodejs.