boolean-js-three-ways-boolean.js

const firstWay = !! 'works';
const secondWay = Boolean('works');
const thirdWay = new Boolean('works');

if (firstWay == true) {
    console.log('First way really works!');
}

if (secondWay == true) {
    console.log('Second way really works!');
}

if (thirdWay == true) {
    console.log('Third way really works!');
}

// First way really works!
// Second way really works!
// Third way really works!