JSFiddle - React, Tailwind, and code Playground

JavaScript

var modularpattern = (function() {
        // your module code goes here
        var sum = 0 ;
        return {
            add:function() {
                sum = sum + 1;
                return sum;
            },
            reset:function() {
                return sum = 0;    
            }  
        }   
    }());
    alert(modularpattern.add());
    alert(modularpattern.add());
    alert(modularpattern.reset());