Capitalizing the first letter of every word in a string can enhance text readability and presentation. JavaScript offers various methods to achieve this transformation efficiently. Let’s explore different approaches to capitalize the first letter of each word in a string using JavaScript.

Using JavaScript Functions

1. Using toUpperCase() and split()

function capitalizeWords(str) {
  return str.toLowerCase().split(' ').map(word => word.charAt(0).toUpperCase() + word.slice(1)).join(' ');
}

// Example usage
const inputString = 'capitalize the first letter of every word';
const capitalizedString = capitalizeWords(inputString);
console.log(capitalizedString);
// Output: 'Capitalize The First Letter Of Every Word'

• toLowerCase() converts the entire string to lowercase to ensure consistent capitalization.
• split(' ') breaks the string into an array of words using the space as a delimiter.
• map() and charAt(0).toUpperCase() capitalize the first letter of each word.
• join(' ') merges the modified words back into a string with spaces.

2. Using Regular Expressions

function capitalizeWordsRegex(str) {
  return str.replace(/\b\w/g, char => char.toUpperCase());
}

// Example usage
const inputString = 'capitalize the first letter of every word';
const capitalizedString = capitalizeWordsRegex(inputString);
console.log(capitalizedString);
// Output: 'Capitalize The First Letter Of Every Word'

• \b matches word boundaries.
• \w matches any word character.
• replace() with a regex pattern replaces the first character of each word with its uppercase equivalent.

Conclusion

Capitalizing the first letter of every word in a string using JavaScript provides improved text formatting and readability. These methods efficiently modify strings, enhancing text presentation in various applications.

Happy Coding !