TitleCase String Challenge

#1

How come the code below does not work?

function titleCase(str) {
  
  str = str.toLowerCase().split(' ');
  
  for (var x = 0; str[x]; x++) {
   str[x][0] = str[x][0].toUpperCase();

  }
  return str;
  
 }

titleCase("heya brother how are you?");
#2

See my comments about your existing code below:

function titleCase(str) {
  
  str = str.toLowerCase().split(' ');
  
  for (var x = 0; str[x]; x++) {
   str[x][0] = str[x][0].toUpperCase(); 
   // strings are immutable in JavaScript.  You are trying to replace a specific
   // character in one of the words directly, but instead you need to reassign a new 
   // word which is the capitalization of the current word in the array iteration.
   // In pseudocode this would be str[x] = firstLetterofWord + restOfWord
   // Now you just need to figure out how to create firstLetterofWord and restOfWord

  }
  console.log(str)  // displays [ 'heya', 'brother', 'how', 'are', 'you?' ] 
  return str; // need to join the array back together before returning it
  
 }

titleCase("heya brother how are you?");
1 Like
#3

Thanks so much, Randell. That makes perfect sense.

#4