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Dynamically created html table data not showing in order as expected

function CreateWeakHeader(name) {
var tr = document.createElement('tr');
var td = document.createElement('td');
td.classList.add("cal-usersheader");
td.style.color = "#000";
td.style.backgroundColor = "#7FFF00";
td.style.padding = "0px";
td.appendChild(document.createTextNode(name));
tr.appendChild(td);
var thh = document.createElement('td');
thh.colSpan = "31";
thh.style.color = "#FFFFFF";
thh.style.backgroundColor = "#7FFF00";
tr.appendChild(thh);
return tr;
}
function htmlTable(data, columns) {
var header = document.createElement("div");
header.classList.add("table-responsive");
var header2 = document.createElement("div");
header2.id = "calplaceholder";
header.appendChild(header2);
var header3 = document.createElement("div");
header3.classList.add("cal-sectionDiv");
header2.appendChild(header3);
if ((!columns) || columns.length == 0) {
columns = Object.keys(data[0]);
}
var tbe = document.createElement('table');
tbe.classList.add("table", "table-striped", "table-bordered");
var thead = document.createElement('thead');
thead.classList.add("cal-thead");
tbe.appendChild(thead);
var tre = document.createElement('tr');
for (var i = 0; i < columns.length; i++) {
var the = document.createElement('th');
the.classList.add("cal-toprow");
the.textContent = columns[i];
tre.appendChild(the);
}
thead.appendChild(tre);
var tbody = document.createElement('tbody');
tbody.classList.add("cal-tbody");
tbe.appendChild(tbody);
var week = 0;
//tbody.appendChild(CreateWeakHeader("Week " + week));
var tre = document.createElement('tr');
for (var j = 0; j < data.length; j++) {
if (j % 7 == 0) {
week++;
tbody.appendChild(CreateWeakHeader("Week " + week));
}
var thead = document.createElement('td');
thead.classList.add("ui-droppable");
thead.appendChild(data[j]);
tre.appendChild(thead);
tbody.appendChild(tre);
}
header3.appendChild(tbe);
document.body.appendChild(header);
}
$("#tb").click(function() {
var header = document.createElement("div");
header.innerHTML = "test";
var d = [header, header, header, header, header, header, header, header];
htmlTable(d, days);
});
var days = ['Maandag', 'Dinsdag', 'Woensdag', 'Donderdag', 'Vrijdag', 'Zaterdag', 'Zondag'];
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.1.0/dist/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.1.0/dist/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button type="button" id="tb">CreateTable</button>
I'm trying to order the data that I get from my server to match the columns of my table.
My table columns are days from Monday to Sunday. When my data has more than 7items it needs to separate with another td. The td shows me week 1 and when my data has more than 7 items it needs to separate again that shows week 2 etc.
Update
Im now using a snipped verdion of my code.
Hope someone can help me out with this.
Thank you

There's a few things going on in the code that are problematic.
An attempt to add the table cells to the row, and the row to the table, was made on each iteration of the for loop. That would have produced a lot of rows with single cells had it worked.
It didn't work because there was only ever a single instance of tre, the row variable. So that meant the line tbody.appendChild(tre); did nothing, since appendChild won't append an element that already has a parent element.
Because your data was an array of references to HTMLElements with parents, appending them using appendChild did nothing for the same reason.
I've amended the code below to take care of all of these situations.
Firstly, the code will append a clone of the data to the cell if it's an HTMLElement. I expect in your real code you won't need this, but for this example, why not? It then appends the cell to the row and continues to the next data element.
Secondly, when the data iterator is at 7, before it appends the "Week N" header, it appends a clone of the row, if it has cells on it.
Finally, after appending the clone of the row, the code will reset the row variable to a new instance of a tr element, with no cells.
I also made some variable name and formatting changes to your code just so I could more easily work with it.
function CreateWeakHeader(name) {
var tr = document.createElement('tr');
var td = document.createElement('td');
td.classList.add("cal-usersheader");
td.style.color = "#000";
td.style.backgroundColor = "#7FFF00";
td.style.padding = "0px";
td.appendChild(document.createTextNode(name));
tr.appendChild(td);
var thh = document.createElement('td');
thh.colSpan = "6"; // "31"; Why 31? A week has 7 days...
thh.style.color = "#FFFFFF";
thh.style.backgroundColor = "#7FFF00";
tr.appendChild(thh);
return tr;
}
function htmlTable(data, columns) {
var header = document.createElement("div");
header.classList.add("table-responsive");
var header2 = document.createElement("div");
header2.id = "calplaceholder";
header.appendChild(header2);
var header3 = document.createElement("div");
header3.classList.add("cal-sectionDiv");
header2.appendChild(header3);
if ((!columns) || columns.length == 0) {
columns = Object.keys(data[0]);
}
var tbe = document.createElement('table');
tbe.classList.add("table", "table-striped", "table-bordered");
var thead = document.createElement('thead');
thead.classList.add("cal-thead");
tbe.appendChild(thead);
var tre = document.createElement('tr');
for (var i = 0; i < columns.length; i++) {
var the = document.createElement('th');
the.classList.add("cal-toprow");
the.textContent = columns[i];
tre.appendChild(the);
}
thead.appendChild(tre);
var tbody = document.createElement('tbody');
tbody.classList.add("cal-tbody");
tbe.appendChild(tbody);
var week = 0;
//tbody.appendChild(CreateWeakHeader("Week " + week));
var tre = document.createElement('tr');
for (var j = 0; j < data.length; j++) {
if (j % 7 == 0) {
week++;
/* Major changes start here */
// if the row has cells
if (tre.querySelectorAll('td').length) {
// clone and append to tbody
tbody.appendChild(tre.cloneNode(true));
// reset table row variable
tre = document.createElement('tr');
}
// then append the Week header
tbody.appendChild(CreateWeakHeader("Week " + week));
}
var td = document.createElement('td');
td.classList.add("ui-droppable");
// Set the value of the cell to a clone of the data, if it's an HTMLElement
// Otherwise, make it a text node.
var value = data[j] instanceof HTMLElement ?
data[j].cloneNode(true) :
document.createTextNode(data[j]);
td.appendChild(value);
tre.appendChild(td);
}
// If the number of data elements is not evenly divisible by 7,
// the remainder will be on the row variable, but not appended
// to the tbody, so do that.
if (tre.querySelectorAll('td').length) {
tbody.appendChild(tre.cloneNode(true));
}
header3.appendChild(tbe);
document.body.appendChild(header);
}
$("#tb").click(function() {
var header = document.createElement("div");
header.innerHTML = "test";
var d = [header, header, header, header, header, header, header, header];
htmlTable(d, days);
});
var days = ['Maandag', 'Dinsdag', 'Woensdag', 'Donderdag', 'Vrijdag', 'Zaterdag', 'Zondag'];
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.1.0/dist/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.1.0/dist/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button type="button" id="tb">CreateTable</button>

Adding Table Header to JSON Table

I am new to Javascript/jQuery and I need some help adding a header to my table. I am getting my data from a JSON array. Here is the code I currently have.
function jsonTable (ChartNum, divclass) {
"use strict";
var output = JSON.parse(document.getElementById(ChartNum).innerHTML);
var table = $('<table></table>');
for (var i=0; i < output.length; i++) {
var tr = $('<tr></tr>');
for (var key in output[i]) {
var td = $('<td></td>');
td.attr('class', key);
td.text(output[i][key]);
tr.append(td);
}
table.append(tr);
}
$(divclass).append(table);
}
jsonTable( 'pdfChart1', '#pdfTable1');
Any help would be really appreciated. Thanks,

Try this:
function jsonTable (ChartNum, divclass) {"use strict";
var output = JSON.parse(document.getElementById(ChartNum).innerHTML);
var table = $('<table></table>');
var trHeader = $('var table = $('<tr><th>Column1</th><th>Column2</th> <th>ColumnsN</th></tr>');
table.append(trHeader);
for (var i=0; i < output.length; i++) {
var tr = $('<tr></tr>');
for (var key in output[i]) {
var td = $('<td></td>');
td.attr('class', key);
td.text(output[i][key]);
tr.append(td);
}
table.append(tr);
}
$(divclass).append(table);
}
jsonTable( 'pdfChart1', '#pdfTable1');
I added variable trHeader where you can add the name of your columns, of course this will only work if your columns are always the same. Or you can get another json with the names of columns and iterate over it to build trHeader in a similar way you build the tds.

How to get th when child td is clicked?

I trying to get the <th> content of the clicked <td> item.
here is the fiddle: http://jsfiddle.net/zrccq447/
the thing is, the <th> can have colspan 2 or 3, this is the point where I am stuck. this is my code
$('#table9').on('click', 'td:not(:nth-child(1))', function () {
var td = $(this);
var clicked_pos = td.index();
var x = $('#headerx9 th:nth-child(' + (clicked_pos) + ')').text();
var xy = td.text();
alert(x);
});
i want x to be the <th> of clicked td. the problem is now that if you click on some td that shares the th with other tds, i am getting the wrong th.
appreciate any help

I've updated your JsFiddle with the answer found here: Finding a colSpan Header for one of the cells or td's is Spans
JsFiddle: http://jsfiddle.net/zrccq447/4/
$('#table9').on('click', 'td:not(:nth-child(1))', function () {
var td = $(this);
var clicked_pos = td.index();
var x = $('#headerx9 th:nth-child(' + thLocator[clicked_pos] + ')').text();
var xy = td.text();
alert(x);
});
var thLocator = [], colCount = 1;
$('#table9').find('tr:first th').each(function () {
for (var i = 0; i < this.colSpan; i++) {
thLocator.push(colCount);
}
colCount++;
});

Following on from my comment you need to sum up the colspans (or default 1) for each TH until you get enough to match the column you desire:
http://jsfiddle.net/TrueBlueAussie/zrccq447/5/
$('#table9').on('click', 'td:not(:nth-child(1))', function () {
var td = $(this);
var clicked_pos = td.index();
var cols = 0;
var $table = td.closest('table');
var $ths = $table.find('tr th');
for (var i = 1; i < $ths.length; i++) {
var $th = $ths.eq(i);
cols += ~~$th.attr('colspan') || 1;
if (cols >= clicked_pos) {
var x = $th.text();
alert(x);
break;
}
}
});
I tried to keep it generic, so it finds the appropriate table and headers on the fly.

One approach is to get store a reference to each TH, in order, in an array and call the text from the array based on the location of the td.
var thholder = $('table th'),
th = [];
for(var i = 0; i < thholder.length; i++) {
var thi = $(thholder[i]);
for(var j = 0; j < (thi.attr('colspan') || 1); j++) {
th.push(thi);
}
}
$('#table9').on('click', 'td:not(:nth-child(1))', function () {
var td = $(this);
var clicked_pos = td.index();
alert(th[clicked_pos].text());
});
http://jsfiddle.net/zrccq447/3/
This code is not optimised, but shows the approach:
Loop through all the TH in the table.
If the TH does not have the attribute 'colspan', then set the attribute to a value of 1.
Create a loop for each value of colspan and save a reference to the current TH in the array.
When you click on a TD, get it's clicked position and retrieve the text of the TH at that position in the array and alert it :)

Could you please help me to highlight the selected HTML table row created dynamically through java script

Below is the JavaScript functionalities addRow() I have used to add the rows dynamically and now am trying to highlight the selected row with red color using rowhighlight() function.
/Function to addRows dynamically to the HTML table/
function addRow(msg)
{
var table = document.getElementById("NotesFinancialSummary");
var finSumArr1 = msg.split("^");
var length = finSumArr1.length-1;
alert("length"+ length);
for(var i=1; i<finSumArr1.length; i++)
{
var rowValues1 = finSumArr1[i].split("|");
tb=document.createElement("tbody");
var tbody=document.createElement("tbody");
table.appendChild(tbody);
var tr=document.createElement("tr");
tbody.appendChild(tr);
for(var k=0;k<=10;k++)//adding data to table dynamically
{
var td=document.createElement("td");
tr.appendChild(td);
var element1=rowValues1[k];
td.innerHTML =element1;
tr.onclick=function(){
rowhighlight(this);//calling the rowhighlight function
}
}
}
}
function rowhighlight(x)
{
var index = x.rowIndex;
document.getElementById("NotesFinancialSummary").rows [index].style.backgroundColor = "red";
}

One approach is to first loop through the other rows and remove the styling (really should be a class) then apply the styling (again, class) to the selected row.
Here's one way of doing it:
function rowHighlight() {
var selectedRows = document.getElementsByClassName('selected');
for (var n = 0; n < selectedRows.length; n++) {
selectedRows[n].className = '';
}
this.className = 'selected'
}
And here's a working example of it, though very simple: fiddle time!

Create HTML table from javascript array

I want to get all classes of the HTML element on my page, split it and store it in array. After that I want to write it into my table in the div with the id "table" which I already have.
So far I have this code:
var string = $('html').attr('class');
var array = string.split(' ');
var arrayLength = parseInt(array.length);
for (i=0; i<=arrayLength; i++) {
// code
}
<div id="test><!-- table goes here --></div>
Can you help me with the rest?
btw, the HTML element has the classes from a modernizr.js.
PS: The code is combination of pure JS and jQuery. Because I dont know how to get all classes of the HTML element in pure JS. Any Idea?

If you're trying to remove jQuery altogether use this:
// Get array of classes without jQuery
var array = document.getElementsByTagName('html')[0].className.split(/\s+/);
var arrayLength = array.length;
var theTable = document.createElement('table');
// Note, don't forget the var keyword!
for (var i = 0, tr, td; i < arrayLength; i++) {
tr = document.createElement('tr');
td = document.createElement('td');
td.appendChild(document.createTextNode(array[i]));
tr.appendChild(td);
theTable.appendChild(tr);
}
document.getElementById('table').appendChild(theTable);

if you have a table already in the html
<div id="test><table >
</table>
</div>
you can simply append new rows to it,
var string = $('html').attr('class');
var array = string.split(' ');
var arrayLength = parseInt(array.length);
for (i=0; i<=arrayLength; i++) {
$("#test table") .append('<tr><td>'+array[i]+'</td></tr>')
}

It is not clear if you want the class names per row or per column. These examples are one class name per row. Try this:
var elm = $('#test'),
table = $('<table>').appendTo(elm);
$(document.documentElement.className.split(' ').each(function() {
table.append('<tr><td>'+this+'</td></tr>');
});
I used native code to get the classNames of the HTML element: document.documentElement.className, but you might as well use $('html').attr('class').
A native JS example using innerHTML:
var d = window.document,
elm = d.getElementById('test'),
html = '<table>',
classes = d.documentElement.classNames.split(' '),
i = 0;
for(; classes[i]; i++) {
html += '<tr><td>' + classes[i] + '</td></tr>';
}
elm.innerHTML = html + '</table>;