Simple function returning 'undefined' value

Question

This is the function I am currently working on:

function getSmallestDivisor(xVal) {    

    if (xVal % 2 === 0) {
        return 2;
    } else if (xVal % 3          


        

Answer 1

    if (xSqrt % 1 === 0) {
    // Because if your function walks this way 
    // it does not meet any 'return' statement
    // till the end and returns nothing. 
        getSmallestDivisor(xSqrt);
    } else {
        return xVal;
    }