![Capitalize the first letter of every word in a string](https://javascriptsource.com/wp-content/uploads/2022/04/Capitalize-the-first-letter-of-every-word-in-a-string-702x526.jpg)
Use String.prototype.replace()
to match the first character of each word and String.prototype.toUpperCase()
to capitalize it.
const capitalizeEveryWord = str =>
str.replace(/\b[a-z]/g, char => char.toUpperCase());
// EXAMPLE
capitalizeEveryWord('hello world!'); // 'Hello World!'