JavaScript Tutorials

Learn JavaScript step by step — a complete, ordered JavaScript tutorial course.

Your JavaScript learning path

Free, in order. Start at the top and work down.

Foundations

Steps 1–6

  1. → JavaScript Introduction Tutorial
  2. → JavaScript Best JavaScrip IDE 2021 Most Popular JavaScrip IDE
  3. → JavaScript Hello World Program Tutorial
  4. → JavaScript Browser Console Developer Console Tutorial
  5. → JavaScript script tag Tutorial
  6. → JavaScript Engine Tutorial

Building blocks

Steps 7–12

  1. → JavaScript How to Print Tutorial
  2. → JavaScript variables Tutorial
  3. → JavaScript reserved words Tutorial
  4. → JavaScript var Tutorial
  5. → JavaScript let Tutorial
  6. → JavaScript const Tutorial

Going deeper

Steps 13–18

  1. → JavaScript data types Tutorial
  2. → JavaScript typeof operator Tutorial
  3. → JavaScript Statements Tutorial
  4. → JavaScript Undefined Tutorial
  5. → JavaScript Null Tutorial
  6. → JavaScript functions Tutorial

Advanced

Steps 19–21

  1. → JavaScript global variables and local variables Tutorial
  2. → JavaScript pass function as parameter Tutorial
  3. → JavaScript return statement Tutorial

Learn JavaScript, one tutorial at a time.

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  1. 2 JavaScript Introduction Tutorial Pretty much in any webpage you look, 3 languages are used: HTML: This is a markup language and…
  2. 22 JavaScript Best JavaScrip IDE 2021 Most Popular JavaScrip IDE The IDE stands for Integrated Development Environment. So what is it? Essentially an IDE is an advanced text…
  3. 42 JavaScript Hello World Program Tutorial In this section we will write a very simple JavaScript program. The purpose here is to see where…
  4. 62 JavaScript Browser Console Developer Console Tutorial In Web Browsers like Chrome, Firefox, Edge, Safari etc. there's a dashboard named Console. Inside the console, we…
  5. 82 JavaScript script tag Tutorial To run a JavaScript code in a webpage, we use <script></script> element. There're two ways in which we…
  6. 102 JavaScript Engine Tutorial The word engine and execution engine are two terms that we will use a lot throughout this tutorial.…
  7. 112 JavaScript How to Print Tutorial What Does It Mean to Print in JavaScript? JavaScript Console.log() Function Example: using Console.log() function in JavaScript JavaScript…
  8. 122 JavaScript variables Tutorial In this section we will learn what the variables are and how to use them in JavaScript. What…
  9. 142 JavaScript reserved words Tutorial In this section we will learn what the keywords in JavaScript are and how they work. Note: Before…
  10. 172 JavaScript var Tutorial In this section we're assuming you're already familiar with the variables in general. In this section we will…
  11. 182 JavaScript let Tutorial In this section we will learn what JavaScript let keyword is and how to use it. What is…
  12. 212 JavaScript const Tutorial In this section we're assuming you're already familiar with variables in general and also know how to create…
  13. 222 JavaScript data types Tutorial In this section we will learn what data types are and how to use them in JavaScript. What…
  14. 242 JavaScript typeof operator Tutorial In this section we will learn what the typeof operator is and how to use it in JavaScript.…
  15. 262 JavaScript Statements Tutorial In this section we will learn what the statement is and how to use it in JavaScript. Define…
  16. 302 JavaScript Undefined Tutorial By default when we first create a variable in JavaScript and don't initialize it with a value, that…
  17. 312 JavaScript Null Tutorial What Is Null? Example: creating a Null variable in JavaScript Null Check in JavaScript (Just explain that there…
  18. 322 JavaScript functions Tutorial In this section we will learn what the function is and how to use it in JavaScript. What…
  19. 352 JavaScript global variables and local variables Tutorial In this section we will learn what the local and global variables are and how to use them…
  20. 382 JavaScript pass function as parameter Tutorial In this section we will learn what does it mean to pass a function as the argument to…
  21. 402 JavaScript return statement Tutorial In this section we will learn what the return statement is and how to use it in JavaScript.…