Chain: Goofy Approach

chain-goofy-approach.markdown

Chain: Goofy Approach

A Pen by greeeeg on CodePen.

License.

script.babel

console.clear();

var Given = function(num) {
  this.newNum = num || 0;

  this.add = function(num) {
    this.newNum = this.newNum + num;
    return this;
  };

  this.subtract = function(num) {
    this.newNum = this.newNum - num;
    return this;
  };

  this.multiply = function(num) {
    this.newNum = this.newNum * num;
    return this;
  };

  this.divide = function(num) {
    this.newNum = this.newNum / num;
    return this;
  };

  this.value = function(num) {
    return this.newNum;
  };

  var n = { __proto__: Given.prototype };
  return function() {
    Given.apply(n, arguments);
    return n;
  };
};

var given = new Given();

console.log(given(2).add(2).subtract(2).divide(1).multiply(2).value());