Gain insights into JavaScript from basics to ES2021, delve into TypeScript essentials, and test your knowledge through quizzes and coding challenges to reinforce learning.

node.tar.gz

node:latest

Jan/2021 Updated to include ES2021

Whether you are a complete beginner or you have some knowledge of JavaScript, this course will guide you from the basics of the language to all the new features introduced up until 2021.  You’ll test your knowledge with quizzes and some coding challenges at the end of each chapter. 

After following this course, the functions and variables let, const, generators, promises and async won't be a problem anymore.

If you want to experience something new, this course also includes an introduction to the basics of TypeScript, which is a must-know for any JavaScript developer.

@SuperCoder4

Just completed this amazing ebook  by @montalesi. I would recommend anyone who is looking to upgrade their es6, 7 or 8 knowledge to go through the book once. It is short crisp and to the point and serves as a great resource that you can go through in limited time

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@battago

I have been working as a front-end developer for over 5 years but I am still reading the book by @montalesi because I find it really exhaustive and well written.

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The Complete Guide to Modern JavaScript

Uncaught TypeError: Cannot mix BigInt and other types, use explicit conversions

What is the correct output of the following code?

```javascript
let bigInt = 99999999999999999;
console.log(bigInt + 1n);
```

What is the correct output of the following code?
<pre><code class="language-javascript">let bigInt = 99999999999999999;
console.log(bigInt + 1n);
</code></pre>

What is the correct output of the following code?

```javascript
const user = {
 name: 'Alberto',
 age: 27,
 work: {
  title: 'software developer'
 }
}

const res = user?.work?.location ? user?.work?.location : user?.work?.title

console.log(res);
```

What is the correct output of the following code?
<pre><code class="language-javascript">const user = {
 name: 'Alberto',
 age: 27,
 work: {
 title: 'software developer'
 }
}

const res = user?.work?.location ? user?.work?.location : user?.work?.title

console.log(res);
</code></pre>

What is the correct output of the following code?

```javascript

const x = 0;

const res = x ?? 'zero';
console.log(res);
```

What is the correct output of the following code?
<pre><code class="language-javascript">
const x = 0;

const res = x ?? 'zero';
console.log(res);
</code></pre>

What is the correct output of the following code?

```javascript

const x = undefined;

const res = x ?? 'undefined value';
console.log(res);
```

What is the correct output of the following code?
<pre><code class="language-javascript">
const x = undefined;

const res = x ?? 'undefined value';
console.log(res);
</code></pre>

What does the `globalThis` object reference in a browser environment?

What does the <code>globalThis</code> object reference in a browser environment?

Quiz

Quiz

Let's practice what we learned about ES2020 with these quizzes

Introduction

Intro To JavaScript

ES6

From ES2016 to ES2022

Intro To TypeScript

Appendix

Quiz