Javascript Interview Question String Count Vowels

Introduction

Write a method that takes a string and returns the number of vowels in the string.

You may assume that all the letters are lower cased.

You can treat "y" as a consonant. 

function count_vowels(string) {
  //your code/*  w  ww.  jav  a 2  s .c o  m*/
}

// These are tests to check that your code is working. After writing
// your solution, they should all print true.

console.log( count_vowels('abcd') === 1 )
console.log( count_vowels('color') === 2 )
console.log( count_vowels('colour') === 3 )
console.log( count_vowels('cecilia') === 4 )




function count_vowels(string) {
  var array = string.split(""); 
  var count = 0;
  for(i=0;i <= array.length; i++){
    if(array[i] === 'a' || array[i] === 'e' || array[i] === 'i' || array[i] === 'o' || array[i] === 'u'){
      count += 1;
    }
  }
  return count;
}

// These are tests to check that your code is working. After writing
// your solution, they should all print true.

console.log( count_vowels('abcd') === 1 )
console.log( count_vowels('color') === 2 )
console.log( count_vowels('colour') === 3 )
console.log( count_vowels('cecilia') === 4 )



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