Capitalize first letter of each word in JS

Question

I\'m learning how to capitalize the first letter of each word in a string and for this solution I understand everything except the word.substr(1) portion. I see that it\'s a

Answer 1

The major part of the answers explains to you how works the substr(1). I give to you a better aproach to resolve your problem

   function capitalizeFirstLetters(str){
      return str.toLowerCase().replace(/^\w|\s\w/g, function (letter) {
          return letter.toUpperCase();
      })
    }

Explanation: - First convert the entire string to lower case - Second check the first letter of the entire string and check the first letter that have a space character before and replaces it applying .toUpperCase() method.

Check this example:

function capitalizeFirstLetters(str){
      return str.toLowerCase().replace(/^\w|\s\w/g, function (letter) {
          return letter.toUpperCase();
      })
    }

console.log(capitalizeFirstLetters("a lOt of words separated even   much spaces "))