Next Day JS

function solve(year, month, day) {
    let thisDay = new Date(year, month -= 1, day += 1);

    let newYear = thisDay.getFullYear();
    let newMonth = thisDay.getMonth();
    let newDate = thisDay.getDate();

    console.log(`${newYear}-${newMonth + 1}-${newDate}`);
}

solve(2018, 2, 28);