Object literals & Array definitions & String interpolations

arrays.coffee

array1 = [1, 2, 3]

array2 = [
  1
  2
  3
]

array3 = [1,2,3,]

# if a range is not prefixed by anything, Coffeescript expands it out into an array
range = [1..5]

# if the range is specified immediately after a variable, CoffeeScript converts it into a slice() method call
firstTwo = ["one", "two", "three"][0..1]

# you can use ranges with strings too
my = "my string"[0..2]

# check if a value exists inside an array
words = ["rattled", "roudy", "rebbles", "ranks"]
alert "Stop wagging me" if "ranks" in words 
 

arrays.js

var array1, array2, array3;
array1 = [1, 2, 3];
array2 = [1, 2, 3];
array3 = [1, 2, 3];

# if a range is not prefixed by anything, Coffeescript expands it out into an array
var range;
range = [1,2,3,4,5];

# if the range is specified immediately after a variable, CoffeeScript converts it into a slice() method call
var firstTwo;
firstTwo = ["one", "two", "three"].slice(0, 2);

# you can use ranges with strings too
var my;
my = "my string".slice(0, 2);

# check if a value exists inside an array
var words;
var __indexOf = Array.prototype.indexOf || function(item) {
  for (var i = 0, l = this.length; i < l; i++) {
    if (this[i] === item) return i;
  }
  return -1;
};
words = ["rattled", "roudy", "rebbles", "ranks"];
if (__indexOf.call(words, "ranks") >= 0) {
  alert("Stop wagging me");
}

object_literal.coffee

object1 = {one : 1, two : 2}

#without braces
object2 = one : 1, two : 2

#using new lines instead of commas
object3 = 
  one : 1
  two : 2
User.create(name : "Hello Object")

object_literal.js

var object1, object2, object3;
object1 = {
  one: 1,
  two: 2
};
object2 = {
  one: 1,
  two: 2
};
object3 = {
  one: 1,
  two: 2
};
User.create({
  name: "John Smith"
});

string_interpolation.coffee

favorite_color = "Blue (or) Red ..."
question = "Bridgekeeper: what ...is your favorite color?
            Galahad: #{favorite_color}
            Bridgekeeper:wrong!
           " 

string_interpolation.js

var favorite_color, question;
favorite_color = "Blue (or) Red ..."
question = "Bridgekeeper: What... is your favourite color?            Galahad: " + favourite_color + "            Bridgekeeper: Wrong!            ";