js patron prototipo/constructor

by Alejandro M

HTML

http://david.lampon.net/2015/06/11/patrones-de-diseno-en-javascript-2/

http://lurailabs.com/javascript-creacion-de-objetos-el-patron-prototype/

CSS

s

JavaScript

var Calculator = function (eq) {
  //state goes here
  this.eqCtl = eq ;// || 20
};
Calculator.prototype = {
  add: function (x, y) {
      this.eqCtl = x + y;
  },
  subtract: function (x, y) {
    this.eqCtl = x - y;
  }
};
var a = new Calculator(8);
document.write(a.eqCtl)
a.subtract(9,2);
document.write(a.eqCtl)

var b=new Calculator();
document.write(b.eqCtl)