Factory Function : Stack

by Cristi Salcescu

JavaScript

"use strict";

function Stack(){
	let list = [];
  
  function push(value){ list.push(value); }
  function pop(){ return list.pop(); }
  
  return Object.freeze({
  	push,
    pop
  });
}

let stack = Stack();
stack.push(1);
stack.push(2);
stack.push(3);
console.log(stack.pop()); //3
console.log(stack.pop()); //2
console.log(stack.list); //undefined