Why is var not deprecated?

Question

Lately after ES6 released, many sources suggested that I use \"const\" and \"let\" instead of \"var\", and that I should stop using \"var\" in my JavaScript.

What I

Answer 1

Everything has their own advantages and disadvantages using var const and let is dependent on their use cases.

var

Variable declarations are processed before the execution of the code. The scope of a JavaScript variable declared with var is its current execution context. The scope of a JavaScript variable declared outside the function is global.

let

The let statement allows you to create a variable with the scope limited to the block on which it is used.

const

const statement values can be assigned once and they cannot be reassigned. The scope of const statement works similar to let statements.

I hope you understand.