Перейти к содержимому

👉 Why Does JavaScript Print undefined? 😳 | Hoisting Explained

Byte Crafts

0:00 / 0:00

👉 Why Does JavaScript Print undefined? 😳 | Hoisting Explained

17 просмотров · 5 дн. назад
Byte Crafts
3 подписчика
17 просмотров · 5 дн. назад
Why does JavaScript return undefined when we use a variable BEFORE declaring it? 🤯 In this short, you'll understand JavaScript Hoisting using the Global Execution Context, Memory Creation Phase, and Call Stack. We'll break down this code: console.log(x); var x = 10; And explain exactly why JavaScript doesn't throw an error and instead gives undefined. If you're learning JavaScript, React, Node.js or preparing for coding interviews, understanding hoisting is a MUST. 🚀 🔥 Follow for more JavaScript, Web Development & System Design content. #javascript #js #webdevelopment #coding #programming #shorts #javascriptshorts #hoisting