Develop Reference

I need to check if any <td> in a html table is empty/null as in after the page loads it only returns <td></td> and change it to <td><p>$0</p></td>

example of the table
<table class="tg">
<thead>
<tr>
<th class="tg-0lax" id="blank-spaces"></th>
<th class="titles" id="this">????</th>
<th class="titles">???<br></th>
<th class="titles">???</th>
<th class="titles">???</th>
</tr>
</thead>
<tbody>
<tr>
<td></td>
<td>not empty do nothing</td>
<td></td>
</tr>
</tbody>
<table>
Now the way this is really written, data will be pushed into each td from an API, some times that API is down, and I would like to use jquery to check if a td has anything displaying in it and if it doesnt I want there to be a string with an error message in the td. This is the jquery im trying currently
var empty = $("td").trim().filter(function () { return this.value.trim() === null })
empty.addClass("errorDefault");
if ($("td").hasClass("errorDefault")) {
this.val("$0");
this.text("$0");
this.html("<p>There was an error getting data</p>");
}

There is no .trim() in jQuery
string trim() is not going to return null.
table cells do not have value
$("td").hasClass("errorDefault") only looks at first element
$("tbody td")
.filter((_, td) => !td.textContent.trim().length)
.addClass("errorDefault")
.text("$0");
.errorDefault {
background-color: red;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table class="tg">
<thead>
<tr>
<th class="tg-0lax" id="blank-spaces"></th>
<th class="titles" id="this">????</th>
<th class="titles">???<br></th>
<th class="titles">???</th>
<th class="titles">???</th>
</tr>
</thead>
<tbody>
<tr>
<td></td>
<td>not empty do nothing</td>
<td></td>
</tr>
</tbody>
<table>
If it is truly empty, CSS can do it.
tbody td:empty{
background: red;
}
tbody td:empty:after {
content: "$0";
}
<table class="tg">
<thead>
<tr>
<th class="tg-0lax" id="blank-spaces"></th>
<th class="titles" id="this">????</th>
<th class="titles">???<br></th>
<th class="titles">???</th>
<th class="titles">???</th>
</tr>
</thead>
<tbody>
<tr>
<td></td>
<td>not empty do nothing</td>
<td></td>
</tr>
</tbody>
<table>

How can I identify an element with no class/ID and won't always be the same nth child?

I've got some text displaying in a table (oldschool, I know) and I'm trying to identify that specific <td> element so I can use jQuery to wrap() <a href> tags around it and convert it to a link.
The problem is, none of the <td>'s in the table have unique classes or ID's, and there will always be an unknown amount of <td>'s before the one I want to access, so I don't think I can use nth of child.
The ONLY unique way that <td> is identifiable is the <td> DIRECTLY before it, which will contain some text that will always be the same. Can I use jQuery to find that <td> based on the text inside it, then target the <td> directly after that? Or is there a better way to do this?

You can use jQuery to fetch element that contains specific text and access the next td as required with a single line of jQuery code. This won't thrown an exception in case when there is no next td.
$(document).ready(function() {
var yourVal = $('td:contains("2.2")').next('td').text();
console.log(yourVal);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<table class="table">
<thead>
<tr>
<th>Col 1</th>
<th>Col 2</th>
<th>Col 3</th>
<th>Col 4</th>
</tr>
</thead>
<tbody>
<tr>
<td>1.1</td>
<td>1.2</td>
<td>1.3</td>
<td>1.4</td>
</tr>
<tr>
<td>2.1</td>
<td>2.2</td>
<td>2.3</td>
<td>2.4</td>
</tr>
<tr>
<td>3.1</td>
<td>3.2</td>
<td>3.3</td>
<td>3.4</td>
</tr>
</tbody>
</table>

You are looking for the nextElementSibling of the <td> with unique textContent. In order to find it, loop over all the <td>s and then get the nextElementSibling of the <td> with unique textContent. And when you find it, break.
const tds = document.querySelectorAll("td")
for (let td of tds) {
if (td.innerText.includes("Larry")) {
const element = td.nextElementSibling
console.log(element.innerText)
break;
}
}
<table class="table">
<thead>
<tr>
<th scope="col">#</th>
<th scope="col">First</th>
<th scope="col">Last</th>
<th scope="col">Handle</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row">1</th>
<td>Mark</td>
<td>Otto</td>
<td>#mdo</td>
</tr>
<tr>
<th scope="row">2</th>
<td>Jacob</td>
<td>Thornton</td>
<td>#fat</td>
</tr>
<tr>
<th scope="row">3</th>
<td>Larry</td>
<td>the Bird</td>
<td>#twitter</td>
</tr>
</tbody>
</table>
If you like jQuery, use this.
const td = jQuery("td:contains('Larry')").next("td").text()
console.log(td)
<script src="https://cdn.jsdelivr.net/npm/jquery#3.5.1/dist/jquery.min.js"></script>
<table class="table">
<thead>
<tr>
<th scope="col">#</th>
<th scope="col">First</th>
<th scope="col">Last</th>
<th scope="col">Handle</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row">1</th>
<td>Mark</td>
<td>Otto</td>
<td>#mdo</td>
</tr>
<tr>
<th scope="row">2</th>
<td>Jacob</td>
<td>Thornton</td>
<td>#fat</td>
</tr>
<tr>
<th scope="row">3</th>
<td>Larry</td>
<td>the Bird</td>
<td>#twitter</td>
</tr>
</tbody>
</table>

why search is not working on jquery-dataTable javascript jquery

i have a table there i have included a button for action , because of that the search is not working on that table.
Here is Demo:https://jsfiddle.net/pkxmnh2a/33/
$(document).ready(function() {
var table = $('#examples').DataTable();
$('a.toggle-vis').on('click', function(e) {
e.preventDefault();
var column = table.column($(this).attr('data-column'));
column.visible(!column.visible());
});
$('#examples tfoot th').each(function() {
var title = $('#examples thead th').eq($(this).index()).text();
$(this).html('<input tyepe="text" placeholder="Search ' + title + '"/>');
});
table.columns().eq(0).each(function(colIdx) {
$('input', table.column(colIdx).footer()).on('keyup change', function() {
table
.column(colIdx)
.search(this.value)
.draw();
});
});
});
.widthind {
width: 30px;
height: 30px;
background-color: black;
color: white;
}
form {
margin: 0;
padding: 0;
display: -webkit-inline-box;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://cdn.datatables.net/1.10.10/js/jquery.dataTables.min.js"></script>
<link href="https://cdn.datatables.net/1.10.10/css/jquery.dataTables.min.css" rel="stylesheet" />
<table class="table table-boardered" id="examples">
<thead class="thead-dark">
<tr>
<th>Id</th>
<th>Customer Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>2PslfYy</td>
<td>He-man </td>
<td>good product 1</td>
</tr>
<thead class="thead-dark excludeAction" style="background-color: !important;">
<tr>
<th colspan="50">
Delete
</th>
</tr>
</thead>
<tr>
<td>3lpnSrv</td>
<td>Jhon Doe</td>
<td>good product 2</td>
</tr>
<thead class="thead-dark excludeAction" style="background-color: !important;">
<tr>
<th colspan="50">
Delete
</th>
</tr>
</thead>
</tbody>
<tfoot>
<tr>
<th>Id</th>
<th>Customer Name</th>
<th>Description</th>
</tr>
</tfoot>
</table>

The problem is you are heading thead tags within the rows of the table. This is not within the spec plus it won't work for Datatables. Plus Datatables doesn't support colspan or rowspan within the tbody (rows).
After fixing the buttons the search still doesn't work because of the selector you have on this line:
$('input', table.column(colIdx).footer()).on('keyup change', function () {
This is affecting the global search also. Compare your code to this example:
https://datatables.net/examples/api/multi_filter.html
Kevin

A thead never goes inside tbody.
Check this jsfiddle.net/nfycu6o5/1.
Correct html table:
<table class="table table-boardered" id="examples">
<thead class="thead-dark">
<tr>
<th>Id</th>
<th>Customer Name</th>
<th>Description</th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>2PslfYy</td>
<td>He-man </td>
<td>good product 1</td>
<td>Delete</td>
</tr>
<tr>
<td>3lpnSrv</td>
<td>Jhon Doe</td>
<td>good product 2</td>
<td>Delete</td>
</tr>
</tbody>
<tfoot>
<tr>
<th>Id</th>
<th>Customer Name</th>
<th>Description</th>
<th></th>
</tr>
</tfoot>
</table>

Your row is creating inside the thead element, the search given in datatable will search from the tbody element instead of thead
Eg: when you type on the searchbox, keyup event will trigger and find the results from table body and your table header always remains the same
<table class="table table-boardered" id="examples">
<thead class="thead-dark">
<tr>
<th>Id</th>
<th>Customer Name</th>
<th>Description</th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>2PslfYy</td>
<td>He-man </td>
<td>good product 1</td>
<td>Delete</td>
</tr>
<tr>
<td>3lpnSrv</td>
<td>Jhon Doe</td>
<td>good product 2</td>
<td>Delete</td>
</tr>
</tbody>
<tfoot>
<tr>
<th>Id</th>
<th>Customer Name</th>
<th>Description</th>
<th></th>
</tr>
</tfoot>
</table>

Get the contents of a td without an "id" attribute

I have the following HTML. How can I fetch the contents of the TD which is under tr class="status_visible" in JavaScript?. I have highlighted the td that I am interested in the code below. There could be multiple status_visible rows. I am only interested in the first row.
There is no id, so I can't use getElementById(). (I also can't use jQuery)
<table class="colored">
<thead>
<tr>
<th colspan="9">
<h2>History</h2>
</th>
</tr>
<tr>
<th>Value</th>
<th>Change Reason</th>
<th>Changed By</th>
<th>Changing Environment</th>
<th>Change Date (UTC)</th>
</tr>
</thead>
<tbody>
<tr class="status_visible">
<td>N</td> <!-- get this value -->
<td>CSS-ID: 343423</td>
<td>login_details</td>
<td>applicationname::signedinuser</td>
<td>2018-01-02 21:09:47 +0000</td>
</tr>
<tr class="status_hidden">
<td>Y</td>
<td>CSS-ID:5554</td>
<td>ServiceName</td>
<td></td>
<td>2014-02-19 13:37:50 +0000</td>
</tr>
</tbody>
</table>

Use document.querySelector() with this selector:
'tr.status_visible td:nth-child(n)'
… where n is the column of the td you're interested in (1-based).
For example, this will grab the text content of the first td of the tr having class "status_visible":
document.querySelector('tr.status_visible td:nth-child(1)').textContent
Snippet:
console.log(document.querySelector('tr.status_visible td:nth-child(1)').textContent);
<table class="colored">
<thead>
<tr>
<th colspan="9">
<h2>History</h2>
</th>
</tr>
<tr>
<th>Value</th>
<th>Change Reason</th>
<th>Changed By</th>
<th>Changing Environment</th>
<th>Change Date (UTC)</th>
</tr>
</thead>
<tbody>
<tr class="status_visible">
<td>N</td>
<td>CSS-ID: 343423</td>
<td>login_details</td>
<td>applicationname::signedinuser</td>
<td>2018-01-02 21:09:47 +0000</td>
</tr>
<tr class="status_hidden">
<td>Y</td>
<td>CSS-ID:5554</td>
<td>ServiceName</td>
<td></td>
<td>2014-02-19 13:37:50 +0000</td>
</tr>
</tbody>
</table>

You could loop through all the td's and show the text content using .textContent like :
var tds = document.querySelectorAll('tr.status_visible td');
for (var i = 0; i < tds.length; i++) {
console.log(tds[i].textContent);
}
var tds = document.querySelectorAll('tr.status_visible td');
for (var i = 0; i < tds.length; i++) {
console.log(tds[i].textContent);
}
<table class="colored">
<thead>
<tr>
<th colspan="9">
<h2>History</h2>
</th>
</tr>
<tr>
<th>Value</th>
<th>Change Reason</th>
<th>Changed By</th>
<th>Changing Environment</th>
<th>Change Date (UTC)</th>
</tr>
</thead>
<tbody>
<tr class="status_visible">
<td>N</td>
<td>CSS-ID: 343423</td>
<td>login_details</td>
<td>applicationname::signedinuser</td>
<td>2018-01-02 21:09:47 +0000</td>
</tr>
<tr class="status_hidden">
<td>Y</td>
<td>CSS-ID:5554</td>
<td>ServiceName</td>
<td></td>
<td>2014-02-19 13:37:50 +0000</td>
</tr>
</tbody>
</table>

move a column ,including th, between tables in jQueryUI sortable

Fiddle Example
I have two example tables with subject titles in the first cells.
<table class='sort connect'>
<thead>
<tr>
<th class='ui-state-disabled'></th>
<th>Person 1</th>
<th>Person 2</th>
</tr>
</thead>
<tbody>
<tr>
<td class='ui-state-disabled'>Age</td>
<td>18</td>
<td>23</td>
</tr>
<tr>
<td class='ui-state-disabled'>Job</td>
<td>Clerk</td>
<td>Policeman</td>
</tr>
</tbody>
</table>
<table class='sort connect'>
<thead>
<tr>
<th class='ui-state-disabled'></th>
<th>Person 3</th>
<th>Person 4</th>
</tr>
</thead>
<tbody>
<tr>
<td class='ui-state-disabled'>Age</td>
<td>17</td>
<td>46</td>
</tr>
<tr>
<td class='ui-state-disabled'>Job</td>
<td>Student</td>
<td>Firefighter</td>
</tr>
</tbody>
</table>
I've made the first child of th and td unsortable since they are titles. Is there any way to move other columns, one at a time (td:nth-child,th:nth-child), to the other table using jQueryUI sortable?
How can I make a whole column sortable in the change or start event?
Here's my expected output:
<table class='sort connect'>
<thead>
<tr>
<th class='ui-state-disabled'></th>
<th>Person 1</th>
</tr>
</thead>
<tbody>
<tr>
<td class='ui-state-disabled'>Age</td>
<td>18</td>
</tr>
<tr>
<td class='ui-state-disabled'>Job</td>
<td>Clerk</td>
</tr>
</tbody>
</table>
<table class='sort connect'>
<thead>
<tr>
<th class='ui-state-disabled'></th>
<th>Person 3</th>
<th>Person 2</th> // sorted
<th>Person 4</th>
</tr>
</thead>
<tbody>
<tr>
<td class='ui-state-disabled'>Age</td>
<td>17</td>
<td>23</td> //sorted
<td>46</td>
</tr>
<tr>
<td class='ui-state-disabled'>Job</td>
<td>Student</td>
<td>Policeman</td> //sorted
<td>Firefighter</td>
</tr>
</tbody>
</table>
JS code:
var fixHelperModified = function(e, tr) {
var $originals = tr.children();
var $helper = tr.clone();
$helper.children().each(function(index)
{
$(this).width($originals.eq(index).width())
});
return $helper;
};
$(function() {
$( ".sort" ).sortable({
change: function( event, ui ) {
var see = ui.item.index();
console.log(see);
$(this).find('td:nth-child(see),th:nth-child(see)')
},
helper: fixHelperModified,
cancel: ".ui-state-disabled",
connectWith: ".connect"
}).disableSelection();
});

What about something like this?
It's a workaround for what you're asking, but it does basically the same thing, just fix the styling, spaces, etc. as you'd like
HTML
<div class="sortableContainer sort connect">
<div>
<table>
<thead>
<tr>
<td height="20px"></td>
</tr>
</thead>
<tbody>
<tr>
<td>Age</td>
</tr>
<tr>
<td>Job</td>
</tr>
</tbody>
</table>
</div>
<div>
<table>
<thead>
<tr>
<td>Person 1</td>
</tr>
</thead>
<tbody>
<tr>
<td>18</td>
</tr>
<tr>
<td>Clerk</td>
</tr>
</tbody>
</table>
</div>
<div>
<table>
<thead>
<tr>
<td>Person 2</td>
</tr>
</thead>
<tbody>
<tr>
<td>23</td>
</tr>
<tr>
<td>Policeman</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="sortableContainer sort connect">
<div>
<table>
<thead>
<tr>
<td height="20px"></td>
</tr>
</thead>
<tbody>
<tr>
<td>Age</td>
</tr>
<tr>
<td>Job</td>
</tr>
</tbody>
</table>
</div>
<div>
<table>
<thead>
<tr>
<td>Person 3</td>
</tr>
</thead>
<tbody>
<tr>
<td>17</td>
</tr>
<tr>
<td>Student</td>
</tr>
</tbody>
</table>
</div>
<div>
<table>
<thead>
<tr>
<td>Person 4</td>
</tr>
</thead>
<tbody>
<tr>
<td>46</td>
</tr>
<tr>
<td>Firefighter</td>
</tr>
</tbody>
</table>
</div>
</div>
CSS
td, th {
border:1px solid #222
}
.red {
background:red
}
.ui-state-disabled {
opacity:1
}
.sortableContainer>div {
display:inline-block;
}
table {
border-spacing:0px;
border-collapse:collapse;
}
JS
$(function () {
$(".sort").sortable({
connectWith: ".connect"
}).disableSelection();
});