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Language/Type: JavaScript string

Write a function named isAllVowels that returns whether a string consists entirely of vowels (a, e, i, o, or u, case-insensitively). For example, isAllVowels("eiEIo") should return true while isAllVowels("banana") should return false.

For this problem, you may assume that a working solution already exists to the previous problem, isVowel, and you may call it in your solution.

Type your JavaScript solution code here:

This is a function exercise. Write a JavaScript function as described. Do not write a complete program; just the function(s) above.

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