JSFiddle - React, Tailwind, and code Playground

JavaScript

//All promise instances get a then method which allows you to react to the promise.  
//The first then method callback receives the result given to it by the resolve() call:

var p = new Promise(function(resolve, reject) {
	// A mock async action using setTimeout
	setTimeout(function() { resolve(10); }, 3000);
});

p.then(function(result) {
	console.log(result);
});