javascript - Define a class Calculator that can satisfy the following code. var cal = new Calculator(); cal.add(3, 5);// 8 cal.add([3, 5]);// 8 -

define class calculator can satisfy following code.

var cal = new calculator(); cal.add(3, 5);// 8 cal.add([3, 5]);// 8 

how code?

function calculator(){    this.p1=p1;    this.p2=p2;    this.add =function(){     return this.p1+this.p2;        } }  var cal = new calculator(); console.log(cal.add(3, 5)); 

it cannot work

you implement parameter methode add.

function calculator(){      this.add = function (p1, p2) {          return p1 + p2;         }  }    var cal = new calculator();  console.log(cal.add(3, 5));

or use method input, stack , method addition.

function calculator() {      this.stack = [];  }    calculator.prototype.input = function (value) {      this.stack.push(value);  }    calculator.prototype.add = function () {      var value = this.stack.pop() + this.stack.pop();      this.stack.push(value);      return value;  }    var cal = new calculator;  cal.input(3);  cal.input(5);  console.log(cal.add());