Welcome, future developer.
This is designed for absolute beginners. No computer science degree required. No prior coding experience needed. Just you, a browser, and a little bit of curiosity.
Let’s boot it up. Every programmer starts here. Open your Chrome browser, right-click anywhere on the page, and select "Inspect" . Then click the "Console" tab. javascript beginner bootcamp (2020)
Got questions? Drop them in the comments. And yes — == vs === ? Always use === in 2020. You’ll thank me later. Share it with a friend who still thinks HTML is a programming language.
let favoriteBand = "The Weeknd"; // String let albumsOwned = 3; // Number let isGoingOnTour = true; // Boolean console.log(typeof favoriteBand); // Output: "string" Functions are reusable spells. You define them once, then call them whenever you need. Welcome, future developer
| Type | What it holds | Example | |------|---------------|---------| | String | Text | "I love pizza" | | Number | Numbers | 42 , 3.14 | | Boolean | True/False | true , false | | Undefined | Nothing yet | let ghost; |
Now close this tab, open your console, and break something. Then fix it. Then break it again. No prior coding experience needed
Use const by default. Only use let when you know the value needs to change. Module 3: Data Types (The Building Blocks) JavaScript understands different types of information. Here are the big four for beginners: