Title Case

Write a function called titleCase that takes in a string and returns the string with the first letter of each word capitalized.

#Basic

function titleCase(str) {
  // Check if the string is empty or contains only whitespace
  if (str.trim().length === 0) return '';

  // Split the string into words by spaces
  const words = str.split(' ');

  // Capitalize the first letter of each word and join them back into a string
  const titleCasedWords = words.map((word) => {
    if (word.trim().length === 0) return ''; // Skip empty words
    const firstLetter = word[0].toUpperCase();
    const restOfWord = word.slice(1).toLowerCase();
    return firstLetter + restOfWord;
  });

  // Join the title-cased words into a single string with spaces
  return titleCasedWords.join(' ');
}

// Test cases
console.log(titleCase('hello world')); // Output: "Hello World"
console.log(titleCase('goodbye   cruel  world')); // Output: "Goodbye Cruel World"
console.log(titleCase('  ')); // Output: ""
console.log(titleCase('  greetings  from  Earth  ')); // Output: "Greetings From Earth"