Compares two arrays and returns boolean value. Coffeescript and Javascript versions provided

gistfile1.coffee

Array::equals = (array) ->
  return false  unless array
  return false  unless @length is array.length
  i = 0
  while i < @length
    if this[i] instanceof Array and array[i] instanceof Array
      # Check and recurse into the nested arrays
      return false  unless this[i].equals(array[i])
    else if this[i] instanceof Object and array[i] instanceof Object
      # Stringify objects for comparison
      return false  unless JSON.stringify(this[i]) is JSON.stringify(array[i])
    else return false  unless this[i] is array[i]
    i++
  true

gistfile2.js

Array.prototype.equals = function(array) {
  var i;
  if (!array) {
    return false;
  }
  if (this.length !== array.length) {
    return false;
  }
  i = 0;
  while (i < this.length) {
    if (this[i] instanceof Array && array[i] instanceof Array) {
      if (!this[i].compare(equals[i])) {
        return false;
      }
    } else if (this[i] instanceof Object && array[i] instanceof Object) {
      if (JSON.stringify(this[i]) !== JSON.stringify(array[i])) {
        return false;
      }
    } else {
      if (this[i] !== array[i]) {
        return false;
      }
    }
    i++;
  }
  return true;
};