const countries = ['Finland', 'Sweden', 'Norway', 'Denmark', 'Iceland'] const newArr = [] for(const country of countries){ newArr.push(country.toUpperCase()) } console.log(newArr) // ["FINLAND", "SWEDEN", "NORWAY", "DENMARK", "ICELAND"]
const countries = ['Finland', 'Sweden', 'Norway', 'Denmark', 'Iceland'] const newArr = [] for(const country of countries){ newArr.push(country.toUpperCase()) } console.log(newArr) // ["FINLAND", "SWEDEN", "NORWAY", "DENMARK", "ICELAND"]