danday74

var chain = (function() {
  var count = 0;
  function Inner() {
    var self = this;
    self.funcA = function(num) { count += num; return self; }
    self.funcB = function() { count += 2; return self; }
    self.ok = function() { var result = count; count=0; return result; }
  }
  return new Inner();  
}());

danday74

var _ = require('underscore');
function MyClass() {
  this.prop1 = {};
  this.prop2 = {};
  this.prop3 = {};
}

MyClass.prototype.func1 = function (obj) {
  var self = this;
  _.extend(self.prop1, obj);