JSFiddle - React, Tailwind, and code Playground

JavaScript

function MyClass() {
  this.property1 = [];
  this.property2 = new Array();
};
var MyObject1 = new MyClass();
var MyObject2 = new MyClass();

MyObject1.property1.push('a');
MyObject1.property2.push('b');
MyObject2.property1.push('c');
MyObject2.property2.push('d');

console.log('MyObject1.property1 =', MyObject1.property1);
console.log('MyObject1.property2 =', MyObject1.property2);
console.log('MyObject2.property1 =', MyObject2.property1);
console.log('MyObject2.property2 =', MyObject2.property2);