5

Capitalise a word

Implement a function called capitalizeWord(word) that capitalizes the first letter of the input string word and returns the capitalized string.

Instructions

• The function should return a new string with the first letter capitalized.
• If the input is an empty string, return an empty string.
• The input will always be a string consisting of one word, and will not contain numbers or special characters.
• Transform only the first character, leaving the rest unchanged.

Example test cases

capitaliseWord('hello'); // Output: 'Hello'
capitaliseWord('mom'); // Output: 'Mom'
capitaliseWord('dAD'); // Output: 'DAD'

Hints

• Use the toUpperCase method.