departmentStoreCompatibility.js

function DepartmentStore(name, location) {
  this.getTitle = function () {
    return name + ' ' + location;
  }
  
  this.setLocation = function (value) {
    return location = value;
  };
}

var atré = new DepartmentStore('Atré', '品川');
console.log(atré.getTitle());

atré.setLocation('原宿');
console.log(atré.getTitle());