How does let and const keywords differ from var in JavaScript?

akhils-nair-b6a2a78b · 23 May 2021 13:24

When we declare any variable using var keyword , it is function scoped. It means that, the variable can be accessed within the function. This leads to wrap the code in a function whenever we need to create a new scope. But let and const keywords uses block scoping. This means the variable declared using these keywords only exist within the innermost block that surrounds them.