Convert a string to Title Case

titlecase.js

function titleCase (str) {
    var array = str.split(' '),
        len = array.length,
        i = 0;
    
    for (; i < len; i+=1) {
        array[i] = array[i][0].toUpperCase() + array[i].slice(1);
    }

    return array.join(' ');
}