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

substr is a function that returns (from the linked MDN) a new string containing the extracted section of the given string (starting from the second character in your function). There is a comment on the polyfill implementation as well, which adds Get the substring of a string.