const falseyValues = [false, '', 0, null, undefined]

const truthyValues = [{}, [], 1, ' ', 'hello']

const printItems = val => val ? console.log(`${val} is a truthy value`) : console.log(`${val} is a falsey value`)

console.log('------')
falseyValues.forEach(printItems)

console.log('------')
truthyValues.forEach(printItems)