Problem statement

Write a function that accepts a string, capitalizes the first letter of each word in the string and returns it.

Example:

capitalize("my first sentence")
// My First Sentence

capitalize("hemanta sundaray")
// Hemanta Sundaray

Solution

const capitalize = str => {
  const strArray = str.split(" ")

  const strCapitalized = strArray.map(element => {
    const firstChar = element[0].toUpperCase()
    const remainingChars = element.slice(1)
    return `${firstChar}${remainingChars}`
  })

  return strCapitalized.join(" ")
}

console.log(capitalize("React query is cool"))
// React Query Is Cool

Learn about String.split() & Array.join() in my blog post here

Learn about JavaScript iterator methods in my blog post here

Learn about JavaScript subarrays with slice() & splice() in my blog post here

Learn about template literals in my blog post here