Hapas setiap huruf pertama dalam setiap kata dalam str
text.replace(/(^\w|\s\w)/g, m => m.toUpperCase());
Frantic Fowl
text.replace(/(^\w|\s\w)/g, m => m.toUpperCase());const toTitleCase = str => str.replace(/(^\w|\s\w)(\S*)/g, (_,m1,m2) => m1.toUpperCase()+m2.toLowerCase())
console.log(toTitleCase("heLLo worLd"));
// Hello Worldconst name = 'flavio'
const nameCapitalized = name.charAt(0).toUpperCase() + name.slice(1)