JSFiddle - React, Tailwind, and code Playground

HTML

<div id="car"></div>

JavaScript

let favoriteColor = 'Blue';
let garageColor   = 'Brown';

if (favoriteColor) {
  car.color = favoriteColor;
} else if (garageColor) {
  car.color = garageColor;
} else {
  car.color = 'red';
}

alert('Your car is: ' + car.color);