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Function does not enter the else

I am using the following function in a datatables table.
function novaData(d){
var dia = d.getDate().toString();
dia = (dia.length == 1) ? '0'+dia : dia;
var mes = (d.getMonth()+1).toString();
mes = (mes.length == 1) ? '0'+mes : mes;
var ano = d.getFullYear();
return dia+"-"+mes+"-"+ano;
}
class CellDate{
constructor( start_date ){
this.date = start_date;
}
getNextDate(){
if($('#user_data tbody tr').length){
var ultima_data = $("#user_data tbody tr:first td:first").text().trim().split("-");
var ultimo_dia = +ultima_data[0];
var ultimo_mes = +ultima_data[1];
var ultimo_ano = +ultima_data[2];
this.date.setDate(ultimo_dia);
this.date.setMonth(ultimo_mes-1);
this.date.setYear(ultimo_ano);
this.date.setDate( this.date.getDate()+1);
}else{
this.date.setMonth(this.date.getMonth()+1);
this.date.setDate(1);
}
return novaData(this.date);
}
}
var DateIndexer = new CellDate(new Date(Date.now()));
$('#add').click(function(){
var html = '<tr>';
html += '<td contenteditable id="data1">'+DateIndexer.getNextDate()+'</td>';
html += '<td contenteditable id="data2"></td>';
html += '<td contenteditable id="data3"></td>';
html += '<td contenteditable id="data4"></td>';
html += '<td contenteditable id="data5"></td>';
html += '<td><button type="button" name="insert" id="insert" class="btn btn-success btn-xs"><span class="glyphicon glyphicon-send"></span></button></td>';
html += '</tr>';
$('#user_data tbody').prepend(html);
});
Within the class in getNextDate, when it is true (the table already has rows), creating a new row fills the date field with the date of the next day of the last row already entered.
But if the table has no row inserted, it returns in the date field NaN-NaN-NaN, because it does not enter into the else.
If you put console.log(DateIndexer.getNextDate()); before the function $('#add').click(function(){ returns 01-08-2019.
But if put console.log(DateIndexer.getNextDate()); inside the function $('#add').click(function(){ returns NaN-NaN-NaN.
Table #user_data:
<div class="container box">
<h3 align="center">MAPA DE TRABALHO</h3>
<h5 align="center">Ajudante de Ação Direta - Turno: Manhã</h5>
<br />
<div class="table-responsive">
<br />
<div align="right">
<button type="button" name="add" id="add" class="btn btn-info"><span class="glyphicon glyphicon-plus"></span></button>
</div>
<br />
<div id="alert_message"></div>
<table id="user_data" class="table table-bordered table-striped">
<thead>
<tr>
<th>Data</th>
<th>Resp. de Turno</th>
<th>Apoio</th>
<th>Elementos ALA A</th>
<th>Elementos ALA B</th>
<th></th>
</tr>
</thead>
</table>
</div>
</div>
</div>

Your html has no tbody, returning null on you first execution
Try to include a tbody
<table id="user_data" class="table table-bordered table-striped">
<thead>
<tr>
<th>Data</th>
<th>Resp. de Turno</th>
<th>Apoio</th>
<th>Elementos ALA A</th>
<th>Elementos ALA B</th>
<th></th>
</tr>
</thead>
<tbody>
</tbody>
</table>
This will fix your code here:
$('#add').click(function(){
var html = '<tr>';
html += '<td contenteditable id="data1">'+DateIndexer.getNextDate()+'</td>';
html += '<td contenteditable id="data2"></td>';
html += '<td contenteditable id="data3"></td>';
html += '<td contenteditable id="data4"></td>';
html += '<td contenteditable id="data5"></td>';
html += '<td><button type="button" name="insert" id="insert" class="btn btn-success btn-xs"><span class="glyphicon glyphicon-send"></span></button></td>';
html += '</tr>';
$('#user_data tbody').prepend(html); //<--- right here
});
Your condition on if need to be reviewed too, because on the first execution tbody was empty, change to this
class CellDate {
constructor(start_date) {
this.date = start_date;
}
getNextDate() {
//here the change for if condition
if ($('#user_data tbody tr') != null && $('#user_data tbody tr').length > 0) {
var ultima_data = $("#user_data tbody tr:first td:first").text().trim().split("-");
var ultimo_dia = +ultima_data[0];
var ultimo_mes = +ultima_data[1];
var ultimo_ano = +ultima_data[2];
this.date.setDate(ultimo_dia);
this.date.setMonth(ultimo_mes - 1);
this.date.setYear(ultimo_ano);
this.date.setDate(this.date.getDate() + 1);
console.log('if', this.date);
} else {
this.date.setMonth(this.date.getMonth() + 1);
this.date.setDate(1);
console.log('else', this.date);
}
return novaData(this.date);
}
}
Code here https://jsfiddle.net/nzb0tdjq/

Table data disappearing upon live search

I am generating dynamic textboxes on button click in a table.
On button click i am calling Details() which appends a new row to the table:
function Details(id,name)
{
var html = '';
html += '<tr>';
html += '<td><input type="text" name="item_id[]" value="'+ id +'" class="form-control item_id" autofocus required /></td>';
html += '<td><input type="text" name="item_name[]" value="'+ name +'" class="form-control item_name" required /></td>';
html += '<td style="text-align:center"><button type="button" name="remove" class="btn btn-danger btn-sm order_item_remove"><span class="glyphicon glyphicon-minus"></span></button></td></tr>';
$("#table").append(html);
}
But when i try to live search the data from the table then its rows disappear.
Live Search:
$("#search_field").keyup(function() {
var count = 0;
var value = this.value.toLowerCase().trim();
$("#table").find("tr").each(function(index) {
if (index === 0) return;
var id = $(this).find("td").text().toLowerCase().trim();
$(this).toggle(id.indexOf(value) !== -1);
if(id.indexOf(value) !== -1){
count = count+1;
}
});
});
Table:
<table class="table table-bordered" id="table">
<tr>
<th>ID</th>
<th>Name</th>
</tr>
</table>
What am i doing wrong?? Any help would be appreciated.

You can use this (edited to use non-ES6 syntax):
var rowMatches = $(this)
.find(':input')
.toArray()
.some(function(input) { return $(input).val().toLowerCase().trim().indexOf(value) !== -1; });
$(this).toggle(rowMatches);
Explanation
.text() is not meant to grab input vales.
You need to use .val(). But since there can be multiple inputs per rows, you want to check whether at least one cell matches the filter.
.toArray() transforms the set of nodes into an array,
Array#some returns true if at least one cell's value matches the filter string.
Demo using the rest of your code
$("#search_field").keyup(function() {
var count = 0;
var value = this.value.toLowerCase().trim();
$("#table").find("tr").each(function(index) {
if (index === 0) return;
var rowMatches = $(this)
.find(':input')
.toArray()
.some(function(input) { return $(input).val().toLowerCase().trim().indexOf(value) !== -1; });
$(this).toggle(rowMatches);
if (rowMatches) {
count = count + 1;
}
});
});
function Details(id, name) {
var html = '';
html += '<tr>';
html += '<td><input type="text" name="item_id[]" value="' + id + '" class="form-control item_id" autofocus required /></td>';
html += '<td><input type="text" name="item_name[]" value="' + name + '" class="form-control item_name" required /></td>';
html += '<td style="text-align:center"><button type="button" name="remove" class="btn btn-danger btn-sm order_item_remove"><span class="glyphicon glyphicon-minus"></span></button></td></tr>';
$("#table").append(html);
}
Details(1, 'foo');
Details(2, 'bar');
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table class="table table-bordered" id="table">
<tr>
<th>ID</th>
<th>Name</th>
</tr>
</table>
<input id="search_field" placeholder="Filter"/>

How to get checked checkbox table value in jquery

In my table I have 2 rows please see my screen shot,suppose I click first check box means I want to take that id ** and **to_area value in jquery how can do this,I tried but I can not get please help some one
$(document).ready(function() {
$('#chemist_allotment_btn').click(function() {
if ($('#chemist_allotment_form').valid()) {
$.ajax({
url: 'update_chemist_bulk_transfer.php',
type: 'POST',
data: $('form#chemist_allotment_form').serialize(),
success: function(data) {
var res = jQuery.parseJSON(data); // convert the json
console.log(res);
if (res['status'] == 1) {
var htmlString = '';
$.each(res['data'], function(key, value) {
htmlString += '<tr>';
htmlString += ' <td class="sorting_1"><div class="checkbox-custom checkbox-success"><input type="checkbox" id="checkboxExample3" name="getchemist" class="getchemist" value="' + value.id + '"><label for="checkboxExample3"></label></div></td>';
htmlString += '<td>' + value.id + '</td>';
htmlString += '<td>' + value.name + '</td>';
htmlString += '<td>' + value.area + '</td>';
htmlString += '<td>' + value.to_area + '</td>';
htmlString += '<td>' + value.address + '</td>';
htmlString += '</tr>';
});
$('#SampleDT tbody').empty().append(htmlString);
$('#get_to_area').click(function() {
var id = $('input[name=getchemist]:checked').val();
if ($(".getchemist").prop('checked') == true) {
alert(id);
alert(value.to_area);
} else {
alert('Please Check');
}
});
} else {
$('#SampleDT tbody').empty().append('No Datas Found');
}
},
});
return false;
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="well white">
<table id="SampleDT" class="datatable table table-hover table-striped table-bordered tc-table">
<thead>
<tr>
<th>Select</th>
<th>Id</th>
<th>Doctor Name</th>
<th>From Area</th>
<th>To Area</th>
<th>Address</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
<center>
<div class="form-group">
<button type="button" class="btn btn-primary" style="text-align:left;" id="get_to_area">Transfer Area</button>
</div>
</center>
</div>

Firstly, add classes to each <td>, like <td class='id'>[Your id]</td>
Similarly for all the elements doctor-name, to-area, etc and a class to each <tr> like row-select
Somewhat like this:
<tr class="row-select">
<td class="select">...</td>
<td class="id">...</td>
<td class="to-area">...</td>
.
.
.
</tr>
Use jQuery like this:
$('.row-select').click(function(){
var id,toArea,checkBox;
id = $(this).find('.id').html(); //get the ID field
toArea = $(this).find('.to-area').html(); //get the to-area field
checkBox = $(this).find('.select > input');
checkbox.prop('checked',!checkbox.prop('checked'));
})
This code will get you he value no mater where you click on the row, and also invert the selection on the checkbox
To get the values of rows selected when the form is submitted run a loop like this
$('.row-select input:checked').each(function(){
var id,toArea,checkBox;
id = $(this).closest('tr').find('.id').html(); //get the ID field
toArea = $(this).closest('tr').find('.to-area').html(); //get the to-area field
})
EDIT
All together:
$(document).ready(function() {
$('#btnSubmit').click(function() {
$('.row-select input:checked').each(function() {
var id, name;
id = $(this).closest('tr').find('.id').html();
name = $(this).closest('tr').find('.name').html();
alert('ID: ' + id + " | Name: " + name);
})
})
$('#btnSelectAll').click(function() {
$('.row-select input').each(function() {
$(this).prop('checked', true);
})
})
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table border=1>
<tr class="row-select">
<td class="check">
<input type="checkbox" />
</td>
<td class="id">12</td>
<td class="name">Jones</td>
</tr>
<tr class="row-select">
<td class="check">
<input type="checkbox" />
</td>
<td class="id">10</td>
<td class="name">Joseph</td>
</tr>
</table>
<button id="btnSelectAll">Select all</button>
<button id="btnSubmit">Get Value</button>

Process step-by-step:
Give the td you need some classes (from-a & to-a);
Initialize an empty array all (we'll store the data inside it later on);
Create a function that is triggered by the checkbox change
Inside the function you need to know which checkbox has changed, what's the state of it, what tr does it belong to and at the end what are the TO AREA and FROM AREA values.
If the state = checked we will add the values to the all (our small data storage);
If the state = not-checked we will remove the value from the all array;
Finally when we are done with selecting and deselecting rows by pressing the button we can get the values of the selected rows.
var all = [];
$('input[type="checkbox"]').change(function(){
var checkbox = $(this);
var state = checkbox.prop('checked');
var tr = checkbox.parents('tr');
var from = tr.children('.from-a').text();
var to = tr.children('.to-a').text();
if(state){
all.push(from + ' -> ' + to);
}else{
var index = all.indexOf(from + ' -> ' + to);
all.splice(index, 1);
}
})
$('#get_to_area').click(function(){
alert(all);
});
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
</head>
<body>
<div class="well white">
<table id="SampleDT" class="datatable table table-hover table-striped table-bordered tc-table">
<thead>
<tr>
<th>Select</th>
<th>Id</th>
<th>Doctor Name</th>
<th>From Area</th>
<th>To Area</th>
<th>Address</th>
</tr>
</thead>
<tbody>
<tr id="1">
<td><input type="checkbox"></td>
<td>1</td>
<td>Nick</td>
<td class="from-a">Kosur</td>
<td class="to-a">Nath Pari</td>
<td>Address</td>
</tr>
<tr id="2">
<td><input type="checkbox"></td>
<td>2</td>
<td>John</td>
<td class="from-a">Rusok</td>
<td class="to-a">iraP htaN</td>
<td>sserddA</td>
</tr>
</tbody>
</table>
<center>
<div class="form-group">
<button style="text-align:left;" id="get_to_area">Transfer Area</button>
</div>
</center>
</div>
<script src="https://code.jquery.com/jquery-3.1.0.js"></script>
</body>
</html>
This is just the basic concept, you can modify it to suit your needs, I'll be happy to help you if you get stuck.

You can also use this fiddle:
In JS:
$('#get_to_area').click(function () {
var id = $('input[name=getchemist]:checked').val();
if ($('input[name=getchemist]').is(':checked')) {
var ID = $('input[name=getchemist]').parent().parent().siblings('td.chkid').html();
var TO_Area = $('input[name=getchemist]').parent().parent().siblings('td.toarea').html();
}
else {
alert('Please Check');
}
});
In Html:
if (res['status'] == 1) {
var htmlString = '';
$.each(res['data'], function (key, value) {
htmlString += '<tr>';
htmlString += ' <td class="sorting_1"><div class="checkbox-custom checkbox-success"><input type="checkbox" id="checkboxExample3" name="getchemist" class="getchemist" value="' + value.id + '"><label for="checkboxExample3"></label></div></td>';
htmlString += '<td class="chkid">' + value.id + '</td>';
htmlString += '<td>' + value.name + '</td>';
htmlString += '<td>' + value.area + '</td>';
htmlString += '<td class="toarea">' + value.to_area + '</td>';
htmlString += '<td>' + value.address + '</td>';
htmlString += '</tr>';
});

I'm guessing you need values of each td whose checbox are checked. This piece of code should get you started.
As you can see, Code loops through each checkbox which is checked, gets contents inside its corresponding td.
var Result = new Array();
$('.checkbox-custom input[type="checkbox"]:checked').each(function(){
var _this = $(this).closest('tr').find('td');
var id= $(_this).eq(0);
var name = $(_this).eq(1);
................... //Similar way for the others
Result.Push(id,name,....)
});

Generate table code( not table) based on input value (HTML, JavaScript)

I want to generate table code based on two input fields. One input field contains number of rows and another one contains number of columns. There is one more button called submit on click of that I need to generate table code for no of rows / no of columns.
Suppose If gave rows 3 and column 2, then it should generate code like
<table>
<tbody>
<tr>
<td> </td><td> </td>
</tr>
<tr>
<td> </td><td> </td>
</tr>
<tr>
<td> </td><td> </td>
</tr>
</tbody>
</table>
This code I need to save into one string.
Please help me how to do this. I am beginner for JavaScript.

need to save into one string.
var form = document.getElementsByTagName("form")[0];
form["button"].onclick = function() {
var html = "<table><tbody>";
for (var i = 0; i < form["rows"].value; i++) {
html += "<tr>";
for (var j = 0; j < form["columns"].value; j++) {
html += "<td> </td>"
}
html += "</tr>"
}
html += "</tbody></table>";
console.log(html)
}
<form>
<input type="number" min="1" max="10" name="rows" required />rows
<input type="number" min="1" max="10" name="columns" required />columns
<input type="button" name="button" value="create table" />
</form>

I made an example for you here:
JS-FIDDLE
function buildTable() {
var rows = document.getElementById("setRows").value;
var cols = document.getElementById("setCols").value;
var table = "<table>";
table += "<tbody>";
for (i=0;i<rows;i++) {
table += "<tr>";
for (j=0;j<cols;j++) {
table += "<td> </td>";
}
table += "</tr>";
}
table += "</tbody>";
table += "</table>";
document.getElementById("tableHolder").innerHTML=table;
}

How to take value from cell in javascript

I have a grid setter in javascript like this :
function AddMdrPymt(){
var f = document.frmPL0011;
var grid = document.getElementById("mdrPymtGrid");
var numRows = grid.rows.length;
grid.insertRow(numRows);
grid.rows[numRows].insertCell(0);
grid.rows[numRows].insertCell(1);
grid.rows[numRows].insertCell(2);
grid.rows[numRows].insertCell(3);
grid.rows[numRows].cells[0].innerHTML = "<input type='checkbox' value='" + curRow + "' name='__mdrPymt' id='__mdrPymt'>";
grid.rows[numRows].cells[1].innerHTML = "<table border='0' align='center'><tr align='center'><td><input type='text' onkeyPress='checkNumber(this)' name='txt_strtAmnt' id='txt_strtAmnt' class='" + txtclass + "' maxlength='18' size='25' fieldName='<%=LangFormatter.getString("PL0011_LoanStartAmnt", true)%>' onblur='checkData(this)' value = '" + val + "' "+dsb+"></td></tr></table>";
grid.rows[numRows].cells[2].innerHTML = "<table border='0' align='center'><tr align='center'><td><input type='text' onkeyPress='checkNumber(this)' name='txt_endAmnt' id='txt_endAmnt' class='portlet-form-input-field' maxlength='18' size='25' fieldName='<%=LangFormatter.getString("PL0011_LoanEndAmnt", true)%>' onblur='checkData2(this)'></td></tr></table>";
curRow += 1;
And this is the grid HTML, the HTML code for the grid tittle, and the function above is function when user press add button
<table width="95%" align="center">
<tr>
<td>
<input name="addBtn" id="addBtn" type=button class='btn' onmouseover="this.className='btnHov'" onmouseout="this.className='btn'" value="<%=LangFormatter.getString("button_add",true)%>" onclick="AddMdrPymt()" tabindex="4">
<input name="delBtn" id="delBtn" type=button class='btn' value="<%=LangFormatter.getString("button_dlt",true)%>" onclick="delMdrPymt()" onmouseover="this.className='btn btnHov'" onmouseout="this.className='btn'" tabindex="5">
</td>
</tr>
<tr>
<td>
<table border="0" cellspacing="1" cellpadding="1" name="mdrPymtGrid" id="mdrPymtGrid" class="grid" width="95%">
<thead class="header">
<th width="1%"></th>
<th width="20%"><%=LangFormatter.getString("PL0011_LoanStartAmnt",true)%></th>
<th width="20%"><%=LangFormatter.getString("PL0011_LoanEndAmnt",true)%></th>
<th width="20%"><%=LangFormatter.getString("PL0011_FixAmntInd",true)%></th>
<th width="20%"><%=LangFormatter.getString("PL0011_FixCashAmnt",true)%></th>
<th width="20%"><%=LangFormatter.getString("PL0011_CashbackLoanAmnt",true)%></th>
</thead>
</table>
</td>
</tr>
<tr>
<td>
<input name="addBtn" id="addBtn" type=button class='btn' onmouseover="this.className='btnHov'" onmouseout="this.className='btn'" value="<%=LangFormatter.getString("button_add",true)%>" onclick="AddMdrPymt()" tabindex="6">
<input name="delBtn" id="delBtn" type=button class='btn' value="<%=LangFormatter.getString("button_dlt",true)%>" onclick="delMdrPymt()" onmouseover="this.className='btn btnHov'" onmouseout="this.className='btn'" tabindex="7">
</td>
</tr>
</table>
How to get value from txt_strtAmnt ?
Thank you

Please use the below code snippet to get the TABLE > TR > TD HTML elemnt value : -
/* To get any TD element value. If one input type inside TD element.
No need to mention the id name as we are getting the value using Tag Name. */
var grid = document.getElementById("mdrPymtGrid");
var tableRows = grid.getElementsByTagName("tr");
for (var j = 0 ; j <= tableRows.length; j++){
var tds = tableRows[j].getElementsByTagName("td");
for (var k = 0 ; k <= tds.length; k++){
var strtAmntVal = tds[k].getElementsByTagName('input')[0].value;
break;
}
}

If you are using grid with multiple rows then solution provided by #Arun will not work,
To make it work
1)find grid element first with document.getElementById('gridid');
2)iterate through its children
3)in that iteration loop find document.getElementById('txt_strtAmnt').value
I am sure that will help you !
also we can achieve through JQuery if you want