Скачать или смотреть JavaScript Interview Question - What is Hoisting and Temporal Dead Zone (TDZ) ?

Hoisting and Temporal Dead Zone (TDZ) ?

Hoisting:
Hoisting is a behavior in JavaScript where variable and function declarations are moved to the top of their containing scope during the compilation phase, before the code is actually executed. This means that you can use variables and functions in your code even before they are declared. Mainly we have Variable Hoisting and Function Hoisting.
Also we have discussed about hoisting limitations as well.

Temporal Dead Zone (TDZ) :
The Temporal Dead Zone (TDZ) in JavaScript refers to the period between entering scope and the actual declaration of a variable or function. During this time, trying to access the variable or function will result in a ReferenceError. The TDZ concept specifically applies to variables declared with let and const.


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