Code Academy makes learning Javascript and other programming languages easy and fun! You don't have to join the site in order to learn but it is a good idea to try out each exercise on your own before checking out the answers. By the time you complete all the exercises, you'll have a basic understanding of how javascript works and will be able to create your own with ease! I found the site extremely helpful and decided to create this answer key to help anyone interested in learning javascript. Enjoy!
Introduction Exercise 0 - Name
Introduction Exercise 1 - Character Length
Introduction Exercise 2 - Simple Math
Introduction Exercise 3 - More Simple Math
Introduction Exercise 4 - Reference Error
Section 1 Exercise 0 - Character Length Plus Simple Math
Section 1 Exercise 1 - Executing Javascript
Section 1 Exercise 2 - Interactive Javascript
Section 1 Exercise 3 - Inputs & Javascript
Section 1 Exercise 4 - Data Types 1 & 2: Numbers & Strings
Section 1 Exercise 5 - Data Type 3: Booleans
Section 2 Exercise 0 - Using Console Log
Section 2 Exercise 1 - Comparisons
Section 2 Exercise 2 - Conditional Statements
Section 2 Exercise 3 - Else Statements
Section 2 Exercise 4 - More Conditional Statements
Section 2 Exercise 5 - Java Syntax
Section 3 Exercise 0 - Mid-Lesson Review
Section 3 Exercise 1 - Math
Section 3 Exercise 2 - Math & The Modulo
Section 3 Exercise 3 - Modulo & 'if / else'
Section 3 Exercise 4 - Substrings
Section 3 Exercise 5 - More Substrings
Section 4 Exercise 0 - Variables
Section 4 Exercise 1 - More Variables
Section 4 Exercise 2 - Change Variable Values
Section 4 Exercise 3 - Conclusion Part 1 Review
Section 4 Exercise 4 - Conclusion Part 2 Final
Codecademy Javascript Cheat Sheet Free
The JavaScript syntax proofing tool JSLint, which is built into the Codecademy code editor, does a pretty good job of finding unnecessary semicolons – or missing ones. It'll show you yellow warning triangles in code lines. Hovering the mouse over a triangle will tell you if there's a missing semicolon or an unnecessary one. The JavaScript Cheat Sheet in a Nutshell. JavaScript is gaining much importance as a programming language. It is increasingly the go-to language for building web properties thanks to its proven track record and benefits. In the JavaScript cheat sheet above, we have compiled many of the most basic and important operators, functions, principles. Functions are one of the fundamental building blocks in JavaScript. A function is a reusable set of statements to perform a task or calculate a value. Functions can be passed one or more values and can return a value at the end of their execution. In order to use a function, you must define it somewhere in the scope where you wish to call it.