for loop in ES6

Question

I did not know you can start a for loop with “let” variable. I thought it can only be a “var”.

Answer 1

If you use `let`, the variable will only be recognised within the loop. But if you use `var` the variable will be recognised within and outside loop scope.

Answer 2

i thought “let” was boolean type.

Answer 3

theres key to create a variable
var , let , const