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evenDigits

Language/Type: JavaScript recursion

Write a recursive function named evenDigits that accepts an integer parameter n and returns a new integer containing only the even digits from n, in the same order. If n does not contain any even digits, return 0.

For example, the call of evenDigits(8342116) should return 8426 and the call of evenDigits(35179) should return 0.

Note: Because JavaScript integers are number types, dividing two integers which do not divide evenly returns the decimal value of the result instead of an integer (for example, 1 / 2 results in 0.5, not 0). Use parseInt(a / b) to parse the result into an integer if needed to solve this problem.

Function: Write a JavaScript function as described, not a complete program.

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