hoisting.js

function topLevel(){
   var i = 1;
   console.log('Top level i: ',i);
   function innerLevel(){
      console.log('Inner level i: ',i);
      console.log('... because var i was silently declared in the beginning of scope === function');
      var i = 2;
      console.log('Inner level i after assigment: ', i);
   }
   innerLevel()
}

topLevel();