JavaScript for Beginners: FreeCodeCamp.org Free Course 💻

Introduction

• Course taught by Beau Carnes from FreeCodeCamp.org
• Targeted at beginners or as a review of basic JavaScript syntax
• It is a standalone course but complements the JavaScript curriculum from FreeCodeCamp.org
• Importance of practicing by creating your own projects

JavaScript Installation

• No installation needed: all web browsers can run JavaScript
• Tools to follow the course:
  • Code editors: Sublime Text, Visual Studio Code, Atom
  • freeCodeCamp.org with a built-in editor
  • CodePen.io
  • Scrimba.com

Comments in JavaScript

• Include notes in the code that will be ignored by JavaScript
• // for single-line comments
• /* ... */ for multi-line comments

Data Types and Variables

• Data is meaningful to the computer
• Seven data types in JavaScript: undefined, null, boolean, string, symbol, number, object
• Variable declarants: var, let, const
• let: variables within the scope where they were declared
• const: variables that should not change

Variable Assignment

• Declare (e.g., var a;) and assign (a = 7;)
• console.log() to see values in the console

Mathematical Operators

• Addition (+), subtraction (-), multiplication (*), division (/)
• Increment (++), decrement (--)
• Decimal numbers (floats)
• Remainder of a division: %
• Compound operators (+=, -=, *=, /=)

Strings and Concatenation

• String declaration: var myName =