JavaScript - Hoisting

While initial variable during the middle of function,

Javascript initial a null varible for us at the top of the function whether it's assigned or not.

Example:

function bakery( ) {
    if(false) {
    var cake = "butter" ;
    }
  }

What it will actually do is:

function bakery() {
  var cake;
  if(false) {
    var cake = "butter" ;
    }
  }

That's what we call hoisting.