Question 4 answer fails tests

[simonblakemore]

Answer fails due to not adding a 0 digit to one digit month and day inputs and not ordering the return correctly

[divpusher]

This is my solution:

function formatDate(userDate) {
    // format from M/D/YYYY to YYYYMMDD
    var splitDate = userDate.toString().split('/');  
    return splitDate[2] + splitDate[0].padStart(2, '0') + splitDate[1].padStart(2, '0');
}

console.log(formatDate("12/3/2014"));