My goal is to get the previous value inside my input element labeled "SERIAL END" then automatically append it’s value when adding a row to "SERIAL START" and not only append but will add +1 to it’s value. The problem is I always get an undefine value, I don’t know what is missing.
Here is the image
Here is the snippets
$(document).ready(function() {
$("#addrow").on("click", function() {
var startElement = $("#start");
var value = parseInt(startElement.val());
startElement.val(value);
var hidden = startElement.val();
var tbl = document.getElementById('tbl').rows.length;
if (tbl === 5) {
alert("It is limited for 5 rows only");
} else {
var newRow = $("<tr id='tablerow_" + hidden + "'>");
var cols = "";
cols +=
'<td><select onchange="selectmodel(this)"data-live-search="true" placeholder="Select your model name"id="model' +
hidden + '" class="form-control selectpicker show-menu-arrow " name="model[]" ><option selected disabled> Select your model name</option><?php $sql = mysqli_query($con,"call gettrial");
if(mysqli_num_rows($sql)>0){
while($row=mysqli_fetch_assoc($sql)){
echo "<option value=$row[id]>".$row['model_name']." </option>";
}
} ?></select></td>';
cols +=
'<td><input id="code' + hidden +
'" value="" type="text" class="form-control" name="code[]" readonly="" /></td>';
cols +=
'<td><input type="number" class="form-control" id="serstart' + hidden +
'" name="serstart[]" readonly/></td>';
cols +=
'<td><input type="number" class="form-control" id="serend' + hidden +
'" name="serend[]" onkeyup="manage(this)" /></td>';
newRow.append(cols);
$("table.order-list").append(newRow)
.find('.selectpicker')
.selectpicker({
liveSearch: true,
showSubtext: true
});
const hide = document.getElementById('start');
hide.value = (parseInt(hidden) + parseInt(1));
hidden++;
}
});
$('#remove').click(function() {
$("#myTable").each(function() {
if ($('tr', this).length > 2) {
$('tr:last', this).remove();
}
});
});
});
$('#addrow').click(function() {
var id = $(this).closest('tr').find('#tablerow_0').text();
var row = $(this).parent("tbody tr");
var rowin=$(this).parent('tr').find('input:number');
var rowprev=$(this).parent('tr').prev().find('input:last').val();
var rownext=$(this).parent('tr').next().find('input:first').val();
console.log($(this).parent('tr').prev().find('input:last'));
});<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="col-lg-12">
<form class="className" name="form" id="form"
action="lot_registration_model_submit.php" data-toggle="validator"
enctype="multipart/form-data" method="POST">
<div class="form-group">
<label class="col-sm-3">Lot No.: <font color="red">*</font></label>
<div class="col-sm-9">
<input autocomplete="off" class="form-control" type="text" id="lotno"
name="lotno" style="text-transform:uppercase" required>
</div>
</div>
<div class="form-group">
<label class="col-sm-3">Month of: <font color="red">*</font></label>
<div class="col-sm-9">
<input autocomplete="off" class="form-control" type="date" id="monthof"
name="monthof" style="text-transform:uppercase" required>
</div>
</div>
<div class="form-group">
<label class="col-sm-3">Serial Start: <font color="red">*</font></label>
<div class="col-sm-9">
<input autocomplete="off" class="form-control" type="number" id="serstart" name="serstart"
style="text-transform:uppercase" required>
</div>
</div>
<div class="form-group">
<label class="col-sm-3">Serial End: <font color="red">*</font></label>
<div class="col-sm-9">
<input autocomplete="off" class="form-control" type="number" id="serend"
name="serend" style="text-transform:uppercase" required>
</div>
</div>
<input type="button" class="btn btn-primary pull-left" id="addrow" value="Add Row" disabled />
<input type="button" class="ibtnDel btn btn-md btn-danger" id="remove" value="Delete Row">
<br>
<table width="100%" class="table order-list table-striped table-bordered table-hover"
id="myTable">
<thead>
<tr>
<th class="col-sm-3">
<center />Model
</th>
<th class="col-sm-3">
<center />Code
</th>
<th class="col-sm-3">
<center />Serial Start
</th>
<th class="col-sm-3">
<center />Serial End
</th>
</tr>
</thead>
<tbody id='tbl'>
<tr id="tablerow_0">
<td>
<select name="model[]" id="model0" class="form-control selectpicker show-menu-arrow"
data-live-search="true" title="Select your model name"
onchange="selectmodel(this)" required>
<?php
$sql = mysqli_query($con,"SELECT model.id,model.model_name,model.code,model.status
FROM model left join grouped on model.id = grouped.modelandcode
WHERE cat_id='1' and model.status='1' and grouped.status is null
ORDER BY model_name ASC");
$con->next_result();
if(mysqli_num_rows($sql)>0)
{
while($row=mysqli_fetch_assoc($sql))
{
echo "<option value='".$row['id']."'>".$row['model_name']."</option>";
}
}
?>
</select>
</td>
<td>
<input name="code[]" type="text" id="code0" value="" class="form-control" readonly="" />
</td>
<td>
<input type="number" name="serstart[]" id="serstart0" class="form-control" readonly />
</td>
<td>
<input type="number" name="serend[]" id="serend0" class="form-control"
</td>
</tr>
</tbody>
</table>
<input type="hidden" value="1" id="start" />
<button id="submit" type="submit" class="btn btn-primary pull-right"><span
class="fa fa-check">   Submit</span></button>
</form>
</div>
You can get length of
trinside tbody then using that length get reference of previoustrthen usetd:eq(3)this will search fourth td because index starts from0then use that value to get value and add it in newly created tr input .Also , you don’t need to use same php code to create select-box just
clonefirst select-box and then use same to pass inside td which are newly created .Then , to intialize selectpicker which are added dynamically use
$("table.order-list tr:last").find(".selectpicker")..this line will get last tr which is added and then inside that tr it will selectpicker .Demo Code :