JSFiddle - React, Tailwind, and code Playground

JavaScript

var customer = (function() {
  var name = "Contoso";
  return {
    getName: function() {
      return name;
    },
    setName: function(newName) {
      name = newName;
    }
  };
})();

console.log(customer.name);
console.log(customer.getName());
console.log(customer.setName('Bob'));
console.log(customer.getName());