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

Replace your switch statement with

if(vowels.indexof(a[i]) > -1)

So

function vow(form){
    var vowels = ['a', 'e', 'i', 'o', 'u'];
    var a = form.CountVowels.value;
        flag = 0;

    for (var i = 0; i < a.length; i++){
       if(vowels.indexof(a[i]) > -1){
        flag++;
       }
    }
    alert(flag);
}

If you want to stick with the switch statement, you can, but you were missing colons ':'

            case 'a':
            case 'e':
            case 'i':
            case 'o':
            case 'u':
                flag++;
                break;

The first method is simpler as you are basically checking if the letter exists in the vowel array.