Title case a sentence?

Question

I\'m trying to proper case a string in javascript - so far I have this code: This doesn\'t seem to capitalize the first letter, and I\'m also stuck on how to lowercase all the l

Answer 1

const titleCase = str => {
    let string = str.toLowerCase().split(" ");
    let arr = [];
    
    string.map(x =>arr.push(x[0].toUpperCase() + x.slice(1))) 
    
    return arr.join(" ");
}