ucwords in javascriopt (uper case Words (only first character un upper and the rest lower of each word)

ucwords.js

function ucwords(str) {
    str = str.toLowerCase().replace(/(^([a-zA-Z\p{M}]))|([ -][a-zA-Z\p{M}])/g, function (replace_latter) {
        return replace_latter.toUpperCase();
    }); //Can use also /\b[a-z]/g
    return str; //First letter capital in each word
}