Untitled

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>

<script id="jsbin-javascript">
let input = 'hello world'

function remove_vowels(input) {
  let result = ''
  for (let char of input) {

  if (char != 'a' && char != 'e' && char != 'i' && char != 'o' && char != 'u') {
    result = result + char
  }
  }
  return result
}

console.log(remove_vowels(input))
</script>


<script id="jsbin-source-javascript" type="text/javascript">let input = 'hello world'

function remove_vowels(input) {
  let result = ''
  for (let char of input) {

  if (char != 'a' && char != 'e' && char != 'i' && char != 'o' && char != 'u') {
    result = result + char
  }
  }
  return result
}

console.log(remove_vowels(input))</script></body>
</html>