function titleCase(str) { str = str.toLowerCase() str = str.split(' ') for ( let i = 0; i < str.length; i++ ) { let upperLetter = str[i].slice(0,1); upperLetter = upperLetter.toUpperCase(); let newWordWithTitleCase = upperLetter.concat(str[i].slice(1,)) let fullString = ''; fullString += newWordWithTitleCase; console.log(fullString) } return str; } titleCase("I'm a little tea pot");