JSFiddle - React, Tailwind, and code Playground
JavaScript
var d = new Date();
var o = {};
var a = [];
Object.prototype.toString.call(d); // [object Date]
Object.prototype.toString.call(o); // [object Object]
Object.prototype.toString.call(a); // [object Array]
// The Date Object & Array parts of the string
// are from the [[Class]] internal property