Scope 3

scope3.js

var a = 2;
function abc(b) {
  var c = 6;
  return function (e) {
    var d = 7;
    return a + b + c + d + e;
  }
}
var f = 3;
var g = 9;
var ex1 = abc(g);
console.log(ex1(f));
a = 4;
console.log(ex1(f));
f = 6;
console.log(ex1(f));
g = 10;
console.log(ex1(f));