© 2023 Hashnode
#temporal-dead-zone
Before starting with Temporal Dead Zone it is better that you first understand the concept of Scope and Hoisting in Javascript. If you have then you are good to go else you can refer to my previous bl…
My recent deep dive into Javascript revealed a key term called Dead Zone in Javascript, which is an advanced topic. Definition In Javascript, a temporal deadzone (TDZ) is an area of the block in a lex…
Definition We cannot access variables/functions in some traditional programming languages before declaring those. But in JavaScript, We can access variables/functions even before declaring those in ou…
Introduction JavaScript is the most adoptable language I've ever had to learn.. I screamed when I first realized variables and functions could be accessed before initialization but then over time, I g…
Are let & const variable Hoisted ? The let & const keyword were introduced in ES6(2015). We all know that variable declared with var keyword can be hoisted. But are let & const variable also hoisted, …
Do you know that before ES6(2015) , JavaScript had only global scope and function scope and for declaring a variable we can use var keyword . In 2015 ES6 introduced two new keywords : let and const. I…
JavaScript is a powerful and versatile programming language. One of the key features of JavaScript is its ability to handle variables and data structures in a dynamic and flexible way. One common erro…
Temporal Dead Zone is an important term in JavaScript. But understanding how it works can easily confuse you if you don't approach it correctly. But don't fret! This article is here to help you grasp …
Definition of Temporal Deadzone/TDZ A temporal dead zone (TDZ) is the area of a block where a variable is inaccessible until the moment the computer completely initializes it with a value In simpler terms, TDZ is that area where you will ge…
Can you predict the output for the below snippets of code? console.log(item1) console.log(item2) var item1; let item2; let item3; console.log(item3) The answer to the first question is : undefined a…
