Dart Print Form Input

index.html

<form>
<h4>Guess the Word<h4>
  <input/>
  <button>Guess</button>
  <div id="error" ></div>
</form>

print.dart

import 'dart:html';

void main() {
  final InputElement input = querySelector("input") as InputElement;
  final DivElement div = querySelector('#error') as DivElement;

  /// Dynamically Print User Input
  input.onInput.listen((dynamic event) => print(event.target.value));
}

style.css

h4 {
  color: white;
}
form{
  display: flex;
  flex-direction: column;
}
#error {
  color: red;
}