Cannot ascertain if cell values in table are empty

Cannot ascertain if cell values in table are empty

Hi,

I have a table where some of the inputs are text and some are date picker. When I enter all values and press submit, the validate function returns that some of the cells are empty. I check that none of the cells in the submitted table are empty. 

Regards,
Arjun

Script file:
function sendval(){
var tosubmit = validateForm();
if(tosubmit){
   showprog();
   var myTableArray = convertarr();
   google.script.run.withSuccessHandler(onsuccess).processLeaveForm(myTableArray);
}
if(!tosubmit){
   alert("Please enter valid values before submitting the form");
   location.reload(forceget=true);
}
}

function validateForm()
{
  var allgood = true;
  $('#passenger-list tr td').each(function() {
    var dvElement = $(this);
        if (!$.isEmptyObject($dvElement)) {
            allgood = false;
        }
    });
  return allgood;
}

$(".DOB").datepicker({
   changeMonth: true,
   changeYear: true
});

$(".PassExpiry").datepicker({
   changeMonth: true,
   changeYear: true
});

$(".ArrDate").datepicker({ 
        minDate: 0,
        maxDate:"+60D",
        numberOfMonths: 2,
        onSelect: function(selected) {
            $("#DepDate").datepicker("option","maxDate", selected)
        }
    });

$(".DepDate").datepicker({
        minDate: 0,
        maxDate: "+60D",
        numberOfMonths: 2,
        onSelect: function(selected) {
            $("#ArrDate").datepicker("option","minDate", selected)
        }
    });
    
$('#tktrequest').on("keyup keypress", function(e) {
  var code = e.keyCode || e.which; 
  if (code  == 13) {               
    e.preventDefault();
    return false;
  }
});

html file

<div id='forminput'>

<form id="tktrequest" onsubmit="return validateForm()" method="post">

<? var logged_user = getcurruser(); ?>
<label><?=logged_user?></label>

<table class="passenger-list" id="passenger-list">
    <tr>
        <td>Name</td>
        <td>D-O-B</td>
        <td>Passport #</td>
        <td>Expiry Date</td>
        <td>Destination</td>
        <td>Departure Date</td>
        <td>Arrival Date</td>
    </tr>
    <tr>
        <td><input type="text" name="Name" id="1_name"/></td>
        <td><input type="text" name="DOB" class = "DOB" id="1_DOB" /></td>
        <td><input type="text" name="PassNum" id="1_PassNum" /></td>
        <td><input type="text" name="PassExpiry" class="PassExpiry" id ="1_PassExpiry"/></td>
        <td><input type="text" name="Destination" id="1_Destination"/></td>
        <td><input type="text" name="ArrDate" class="ArrDate" id="1_ArrDate"/></td>
        <td><input type="text" name="DepDate" class = "DepDate" id="1_DepDate"/></td>
        <td><a class="remove">remove</a></td>
    </tr>
</table>
<a href="#" title="" class="add-passenger">Add Passenger</a>

<div>
<input type="text" name="Comments" value="Comments" class="comment-text" />
</div>

<input type='button' name='Submit' value="Submit" onclick=sendval()>


</form>
</div>