Count the vowels of an input?

Question

Hi I am trying to count the vowels of the input of the form in my HTML using javascript currently with no success.

Here is my HTML

Answer 1

The vow function expects the form as a parameter, but you're not passing it. Give your form an ID so you can look it up and pass it.

button1.onclick = function() {
    vow(document.getElementById('demo_form'));
};

function vow(form) {
  var a = form.CountVowels.value;
  flag = 0;

  for (var i = 0; i < a.length; i++) {
    switch (a[i]) {
      case 'a':
      case 'e':
      case 'i':
      case 'o':
      case 'u':
      flag++;
      break;
    }
  }
  alert(flag);
}

function init() {
    var button1 = document.getElementById("btn1")
    button1.onclick = function() {
      vow(document.getElementById('demo_form'));
    };
}

window.onload = init;

  Phrase:
  
  

  

You were also missing the : character after each case statement.