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Vowel Counter
basicjavascript
Background
Vowel counting is a simple text analysis task useful in linguistics and string manipulation exercises.
Problem
Write a function that takes a string and returns the count of vowel characters (a, e, i, o, u), ignoring case.
Input
A string of zero or more characters.
Output
A non-negative integer representing the vowel count.
Sample tests
Sample 1
Input: "Hello World"
Expected: 3
Your solution
Learning objective
Learn regex matching with global and case-insensitive flags in JavaScript.