What is closure in JavaScript and why is it useful?

Gargi Holikar
Gargi Holikar

Posted On: May 31, 2021

 

A closure in JavaScript is known as JavaScript closure. It makes it possible for a function to have "private" variables. JavaScript closure is used to control what is and isn't in scope in a particular function, along with which variables are shared between sibling functions in the same containing scope.

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