What is the difference between let, var and const keyword in JavaScript ?

Shaikh Irshad Aug 15, 2021 0 238

Forums › JavaScript › What is the difference between let, var and const keyword in JavaScript ?

Staff asked 3 years ago

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Umang Ramani

Staff answered 3 years ago

Var	Let	Cosnt
A var variable’s scope is functional scope.	A let variable’s scope is block scope.	A let variable’s scope is block scope.
It is possible to update and re-declare it in the scope.	It can be modified, but not re-declared in the scope.	It cannot be changed or added to the scope.
It can be defined without being initialized.	It can be defined without being initialized.	It cannot be defined without first being initialized.

Shaikh Irshad