CoffeeScript使ってみた

sudo apt-get install coffeescript

nums = [1, 2, 3, 4, 5]
if nums[3] is 3
  window.alert '一致' 
else
  window.alert nums[3]

coffee -c a.coffee

// Generated by CoffeeScript 1.4.0
(function() {
  var nums;

  nums = [1, 2, 3, 4, 5]; 

  if (nums[3] === 3) {
    window.alert('一致');
  } else {
    window.alert(nums[3]);
  }

}).call(this);

@nums = nums

   this.nums = nums;