0
let main = "i am really calm at this moment";
let sub = "am this";

function missingWords () {
  
  let mainArr = main.split(" ");
  let subArr = sub.split(" ");


 return mainArr.toLowerCase().filter( x => !subArr.toLowerCase.includes(x));
};
  
console.log(missingWords());
Spectric
  • 30,714
  • 6
  • 20
  • 43
One of Stones
  • 37
  • 4
  • Hi. Does these help you? https://stackoverflow.com/questions/18480351/how-to-use-javascript-for-string-words-comparision https://stackoverflow.com/questions/18050932/detect-differences-between-two-strings-with-javascript – Dhana D. Aug 29 '21 at 19:42

2 Answers2

0

Arrays don't have a toLowerCase() function. If you want to make all elements in the array lowercase, you should first convert the string to lowercase, then split by a space.

let main = "i am really calm at this moment";
let sub = "am this";

function missingWords() {

  let mainArr = main.toLowerCase().split(" ");
  let subArr = sub.toLowerCase().split(" ");


  return mainArr.filter(x => !subArr.includes(x));
};

console.log(missingWords());
Spectric
  • 30,714
  • 6
  • 20
  • 43
0

I do not see any reason to split both of strings. You can use 'includes' also on string and not only on array.

function missingWords(mainString,subString) {

  const lowerMainString = mainString.toLowerCase();
  const lowerSubString = subString.toLowerCase();

  return lowerMainString.split(" ").filter(x => !lowerSubString.includes(x));
};

missingWords("i am really calm at this moment", "am this");
zordon
  • 186
  • 9