JavaScript - Tricky questions

/********* 
  1
*********/

  var a = 12;  
  var superFunction = function () {  
    console.log(a);
    var a = 80;  
  };  
  superFunction ();
  // should log `undefined`, when the `console.log` is reached `a` is not defined yet

/********* 
  2
*********/

  ( function () {
    try {
      throw new Error();
    }
    catch (a) {
      var a = 1, b = 2;
      console.log(a);
    }
    console.log(a);
    console.log(b);
  } )();
  // Should log `1`, `undefined` and then `2`
  // `a` gets undefined outside the catch scope