JS By Example
JS By Example For Noob
❱
1. Hello World
  ❱
3. Types and Values
4. Variable
  ❱
5. 1. Identifiers
6. Operators
  ❱
8. Function
9. Flow of Control
  ❱
10. 1. Conditionals
  2. Iterative
11. Exercise
  ❱
12. 1. Guess the output
  2. Fix the code
  3. Odd one out
JS By Example For Coder
❱
1. Types and Values
  ❱
2. 1. Primitive vs Reference
  2. Objects
    ❱
  3. 1. Prototype
    2. Prototypal Inheritance
  4. Array
3. Variables
  ❱
4. 1. Blocks Scope vs Function Scope
  2. Hoisting
5. Functions
  ❱
6. 1. Arrow functions
  2. Constructor functions
  3. IIFE
  4. this keyword
    ❱
  5. 1. call, apply & bind
7. Class
  ❱
8. 1. Under the hood
  2. this keyword again
9. Asynchronous JavaScript
  ❱
10. 1. Callback
  2. Promise
  3. Async & Await
JS By Example For WebDev
❱
1. window
  ❱
2. 1. Blocks Scope vs Function Scope
  2. Hoisting

Browser

Well any JavaScript code only need a JavaScript Engine to run and every browser have one.

Simply open any browser and press Option + ⌘ + J (on macOS), or Shift + CTRL + J (on Windows/Linux).

And you'll see console has opened.

Now paste (or write) the code and press Return (on macOS), or Enter (on Windows/Linux).

NOTE: Only recommended for quick and small code snippets.