JavaScript -> Convert a string to titlecase

TitleCase.js

export const convertToTitleCase = (str) => {
  return str
    // Split on spaces
    .split(' ')
    // Capitalize the first letter of each word
    .map((word) =>
      word.length > 0
        ? word[0].toUpperCase() + word.substr(1).toLowerCase()
        : word
    )
    // Join capitalized words back into one string
    .join(' ');
};