Capitalizing certain strings in an array

Question

I basically want to capitalize the first letter in every word in a sentence, assuming that str is all lowercase. So here, I tried to split the string, letter by letter, then by using for loop, I would capitalize whatever the letter that's after a space. Here's my code and could you please point out where I coded wrong? Thank you.

function titleCase(str) {
  var strArray = str.split('');
  strArray[0].toUpperCase();
  for (i=0; i<strArray.length;i++){
    if (strArray[i]===" "){
      strArray[i+1].toUpperCase();
    }
  }
  return strArray.join('');
}

This is not a duplicate of that question. This is asking how to capitalize every word's first letter, not just the first letter of a string. — Ahmad Mageed, May 11 '18 at 04:05
Here you go man: https://stackoverflow.com/questions/32589197/capitalize-first-letter-of-each-word-in-a-string-javascript/32589350 — AndrewL64, May 11 '18 at 04:21

score 1 · Accepted Answer · answered May 11 '18 at 04:07

1

You need to assign the values:

function titleCase(str) {
      var strArray = str.split('');
      strArray[0] = strArray[0].toUpperCase();
      for (i=0; i<strArray.length;i++){
        if (strArray[i]===" "){
          strArray[i+1] = strArray[i+1].toUpperCase();
        }
      }
      return strArray.join('');
    }

answered May 11 '18 at 04:07

Richard Lovell

848
10
18

Wow that was a dumb mistake. Thank you so much! – yeseula May 11 '18 at 04:39

score 1 · Answer 2 · answered May 11 '18 at 04:19

You can try following

function titleCase(str) {
  var strArray = str.split(' ');
  for (i=0; i<strArray.length;i++){
      strArray[i] = strArray[i].charAt(0).toUpperCase() + strArray[i].slice(1);
  }
  return strArray.join(' ');
}


console.log(titleCase("i am a sentence"));

Capitalizing certain strings in an array

2 Answers2