Jquery or Javascript Start Exam Time

 <script>

function startTimer() {
    var date = "<?php echo $date ?>"; // dynamic date
    var time = "<?php echo $time ?>"; // dynamic time current time to 40 minutes (example)
    var startTime = new Date(date);
    var endTime = new Date(startTime.getTime() + time * 60000);

    console.log(date + " " + time);
        var timerInterval = setInterval(function() {
        var remainingTime = endTime - new Date();
        if (remainingTime <= 0) {
                clearInterval(timerInterval);
                $('#examTime').text('Time\'s up!');
                $('#timeUpModal').modal('show');
            // auto Submit Form
            setTimeout(() => {
                    submitForm();
                }, 7000);
} else {
        var minutes = Math.floor((remainingTime / (1000 * 60)) % 60);
        var seconds = Math.floor((remainingTime / 1000) % 60);
        minutes = (minutes < 10 ? '0' : '') + minutes;
        seconds = (seconds < 10 ? '0' : '') + seconds;
        $('#examTime').text('Time Remaining: ' + minutes + ':' + seconds);
        }
    }, 1000);
}

startTimer();

function submitForm()
{
        // if you use this method can you check (name='submit') --> change name submit1 or else any words
        document.getElementById('objForm').submit();
}
</script>