window name

Question

What does the code snippet to the right output by console.log?

Snippet

var a = 1;
(function() {
  console.log(a + this.a);
  var a = '2'
  console.log(a + this.a);
})();

var name = 1;
(function() {
  console.log(name + this.name);
  var name = '2'
  console.log(name + this.name);
})();

Source

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