var, let, const: ПОЛНЫЙ КУРС [2023] | Объявление переменных в JS

INTENSIVE COURSE "Playing in Pure JavaScript: From Scratch to Deployment": https://pomazkovjs-hangman.ru/ ⭐ Donate: https://boosty.to/pomazkovjs/single-p... – Why is the VAR keyword dangerous? – What is a scope, and what types of scopes are there? – Why is it always better to use CONST instead of LET when possible? – What mistakes do new developers make when working with variables? You'll learn all this by watching the video to the end. In it, I've combined everything you need to know about declaring variables in JavaScript and the var, let, and const keywords. Enjoy watching! 🔥 ➡️ Video about CLOSURES:    • ЗАМЫКАНИЯ В JS за 15 минут: ОТ и ДО | Что ...   ➡️ ROADMAP from SCRATCH to MIDDLE:    • Что должен знать JUNIOR Фронтенд Разработч...   TIMESTAMPS: 00:00 This is an unusual video about var, let, and const 00:23 Bonus at the end of the video 00:38 Introduction 00:55 What is scope in JS 01:09 Types of scope 01:19 Global scope in JS 01:31 Functional scope in JS 01:46 Block scope in JS 03:11 Disadvantages of var 07:05 Hoisting in JavaScript 11:03 Differences between LET and CONST vs. VAR 5:00 PM Differences between LET and CONST 6:52 PM How is CONST better than LET? 7:43 PM Bonus 1: A Fact About VAR 10:07 PM Bonus 2: Temporal Dead Zone (TDZ) in JavaScript 25:45 Conclusion 26:04 PM My Telegram Channel SOCIAL MEDIA: 👀 Instagram -   / pomazkov.js   🚀 Telegram - https://t.me/pomazkovjs ABOUT ME: My name is Arseniy Pomazkov, I'm a senior frontend developer who started his career on an American freelance exchange and worked his way up from "intern" to "senior developer." I taught myself programming, and my goal is to show you that web development is not only promising and in-demand, but also incredibly exciting 🔥 #frontend #variables #fullcourse #javascript