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delete row in table from firestore database

I am trying to create a button to delete a row in my table from the firebase database but I am not sure how to choose one specific row to delete using a button function. I am using javascript and firesource.
The function that i am using to fill my table is
function filled_table_start(num){
document.getElementById("tbody1").innerHTML = "";
members.forEach((member) => {
if(member.exists()){
row += '<tr id="student'+ (count+1) +'" >';
row += '<td>' + (count+1) +'</td>';
row += '<td>' + member.data().studentID + '</td>';
row += '<td>' + member.data().name + '</td>';
row += '<td>' + member.data().gender + '</td>';
row += '<td>' + member.data().schoolEmailAdd + '</td>';
row += '<td>' + member.data().handphoneNum + '</td>';
row += '<td><button type="button" onclick= "' + deleteDoc(doc(db,this.studentID ))+'" >Delete User</td>';
//row += '<td>' +
row += '</tr>';
document.getElementById('tbody1').innerHTML += row;
count ++;
};
});
}
I am wondering if something like this.deleteDoc will work? or is there another function that can be used to delete a specific row?

I just created a dummy demo table here. What I did is, simply give a class to each of the buttons, when you will click on the button, It will find the closest tr and remove it.
$("#tbody1").on('click', '.deleteDoc', function () {
$(this).closest('tr').remove();
});
table {
font-family: arial, sans-serif;
border-collapse: collapse;
width: 100%;
}
td, th {
border: 1px solid #dddddd;
text-align: left;
padding: 8px;
}
tr:nth-child(even) {
background-color: #dddddd;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tbody id="tbody1">
<tr>
<th>Sl</th>
<th>ID</th>
<th>Name</th>
<th>Gender</th>
<th>Mail</th>
<th>Mobile</th>
<th>Action</th>
</tr>
<tr id="student1">
<td>1</td>
<td>11</td>
<td>ABC</td>
<td>F</td>
<td>abc#gmail.com</td>
<td>123456</td>
<td><button type="button" class="deleteDoc"> Delete User </td>
</tr>
<tr id="student2">
<td>2</td>
<td>12</td>
<td>DEF</td>
<td>M</td>
<td>def#gmail.com</td>
<td>123456</td>
<td><button type="button" class="deleteDoc"> Delete User </td>
</tr>
<tr id="student3">
<td>3</td>
<td>13</td>
<td>IJK</td>
<td>F</td>
<td>ijk#gmail.com</td>
<td>123456</td>
<td><button type="button" class="deleteDoc"> Delete User </td>
</tr>
</tbody>
</table>

setting a value in the dropdowns in table based on imported values [javascript, jquery]

I have a table that is filled dynamically with a csv file. I created a table that inside itself has dropdowns in some columns.
What I want to do now is to check if a value exists in the cell where the dropdown is supposed to be, if so to check if it exists in the dropdownlist if yes then set this as selected in dropdown list otherwise selected is at default value and the cell gets red margine around.
Here is a jsFiddle with an example as how my code currently looks like:
https://jsfiddle.net/r236uy5k/
EDIT : I corrected my jsfiddle:
https://jsfiddle.net/kcau7jhd/
$(function(){
var firstDDM = ['aaa','bbb','ccc','ddd'];
var firstshortcut = ['a','b','c','d'];
var option = "",
select = "";
for(var i=0; i<firstDDM.length;i++){
option += '<option value="'+ firstshortcut[i] + '">' + firstDDM[i] + '</option>';
}
select = '<select class="firstDDM" type="firstDDM">' + option + '</select>';
$("tr").each(function() {
$(this).find("td:eq(3)").append(select);
});
});
$(function(){
var secondDDM = ['Default','AAA','BBB','B1','C'];
var secondshortcut = ['Default','a','b','b1','c'];
var option = "",
select = "";
for(var i=0; i<secondDDM.length;i++){
option += '<option value="'+ secondshortcut[i] + '">' + secondDDM[i] + '</option>';
}
select = '<select class="secondDDM" type="secondDDM">' + option + '</select>';
$("tr").each(function() {
$(this).find("td:eq(5)").append(select);
});
});
$("#addRow").click(function(){
$("#my_id").each(function(){
var tds='<tr>';
jQuery.each($('tr:last th', this), function(){
tds += '<th>' +'<input type="checkbox" name="record" tittle="Delete this row"></input>' + '</th>';
});
jQuery.each($('tr:last td', this), function(){
if($('select',this).length){
tds+= '<td>' + $(this).html() + '</td>';
}else{
tds+= '<td></td>';
}
});
tds+= '</tr>';
$('tbody',this).append(tds);
$('#my_id tbody tr:last').attr("contentEditable", true);
});
});
//for the columns that need to be imported with dropdowns create editable option - temporarlly
$(function() {
$("tr").each(function() {
$(this).find("td:eq(3), td:eq(4),td:eq(5)").attr("contentEditable", true);
});
});
//Find and remove selected table rows
$('#delete-row').click(function(){
var r = confirm('Are you sure you want to delete them all?');
$("tbody").find('input[name="record"]').each(function(){
if($(this).is(":checked")){
if(r == true){
$(this).parents("tr").remove();
}else{
return false;
}
}
});
});
table {
border-collapse: collapse;
border: 1px black solid;
font: 12px sans-serif;
width: 100%;
table-layout:auto;
}
td {
border: 1px black solid;
text-align: left;
padding: 2px;
}
thead:hover{
text-decoration: none !important;
}
thead tr:first-child{
color:white;
text-align: center;
background-color: #5bc0de;
padding: 10px;
}
tr:nth-child(even){
background-color: #f2f2f2
}
tr:hover{
background-color: #5bc0de;
}
button{
display: inline;
padding: 50px;
}
input button{
display: inline;
}
.dropbtn{
background-color: blue;
}
.table-responsive {
overflow-y: auto;
height: 800px;
}
.table-responsive table {
border-collapse: collapse;
width: 100%;
}
.table-responsive thead th{
position: sticky;
top: 0;
background-color: #5bc0de;
padding: 2px;
}
::-webkit-scrollbar {
width: 12px;
}
::-webkit-scrollbar-thumb {
background-color: darkgrey;
outline: 1px solid slategrey;
}
.myButtons{
display: inline;
padding: 20px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<html>
<head>
<title>Filtered CSV File</title>
</head>
<body>
<h1>
Filtered CSV FIle
</h1>
<br/>
<br/>
<div class="myButtons">
<input type="button" value="Add new row" class="btn btn-info" id="addRow">
<input type="button" value="Delete rows" id="delete-row" class="btn btn-info">
</div>
<br/>
<div class="table-responsive">
<table class="dataframe my_class" id="my_id">
<thead>
<tr style="text-align:right;">
<th> </th>
<th>col1</th>
<th>col2</th>
<th>col3</th>
<th>col4</th>
<th>col5</th>
<th>col6</th>
<th>col7</th>
<th>col8</th>
</tr>
</thead>
<tbody>
<tr>
<th>1</th>
<td>row1</td>
<td>row1</td>
<td>row1</td>
<td></td>
<td>row1</td>
<td>B1</td>
<td>row1</td>
<td>row1</td>
</tr>
<tr>
<th>2</th>
<td>row2</td>
<td>row2</td>
<td>row2</td>
<td></td>
<td>row2</td>
<td>AAA</td>
<td>row2</td>
<td>row2</td>
</tr>
<tr>
<th>3</th>
<td>row3</td>
<td>row3</td>
<td>row3</td>
<td></td>
<td>row3</td>
<td>C</td>
<td>row3</td>
<td>row3</td>
</tr>
</tbody>
</table>
</div>
</body>
</html>

You can edit the select text you are entering. Following are the things which I think you want to achieve:
Identify if the dropdown has a certain value and preselect them if possible.
If the dropdown does not have correct value for pre selection then mark them as error field.
If the above mentioned points are incorrect please let me know i will make the relevant changes which are required.
I have added a condition check if (firstshortcut[i] == $(this).find("td:eq(3)")[0].innerHTML) you can replace it with any condition that you want.
Replace the following jquery snippets
$("tr").each(function () {
var option = "",
select = "",
classObject = '',
isSelected = false;
if($(this).find("td:eq(3)")[0]){
for (var i = 0; i < firstDDM.length; i++) {
if (firstshortcut[i] == $(this).find("td:eq(3)")[0].innerHTML) {
option += '<option selected="selected" value="' + firstshortcut[i] + '">' + firstDDM[i] + '</option>';
isSelected = true;
}
else
option += '<option value="' + firstshortcut[i] + '">' + firstDDM[i] + '</option>';
}
classObject = !isSelected ? 'errorDropDown' : '';
select = '<select class="firstDDM' + ' ' + classObject + '" type="firstDDM">' + option + '</select>'
$(this).find("td:eq(3)").append(select);
}
});
Add this class to the css file:
.errorDropDown {border: 1px solid red;}

Cannot read property 'childNodes' checkbox to get value from same row

Below code should get me the value of the column next to the checked box in the table, but, once the button is clicked, I am getting:
Cannot read property childNodes of null
Note: database from firebase which where the values from the table come from
Table image :
rootRefReAgents.on("child_added", snap => {
var AgentName = snap.child("Name").val();
$("#table_body_Test").append("<tr><td>" + AgentName + "</td><td><INPUT TYPE=\"Checkbox\"> </Input></td></tr>");
});
}
function ActionData(){
let agents = [];
let table = document.getElementById("table_body_Test");
let childNodes = Array.from(table.childNodes);
// let childNodes = table.childNodes;
for (let child of childNodes.values()) {
console.log(`child: ${child}`);
if (child.constructor.name !== "HTMLTableRowElement") {
continue;
}
let agent = child.childNodes.item(1).innerHTML;
console.log(`agent: ${agent}`);
let checkbox = child.childNodes.item(3).childNodes.item(1);
console.log(`checkbox: ${checkbox}`);
console.log(checkbox.checked);
if (checkbox.checked) {
agents.push(agent);
}
}
console.log(`agents: ${agents}`);
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table id="testTable" align="center">
<thead>
<tr style="color: #D2002E; background: #FFCC01; height:32px;">
<td>Agents</td>
<td>Select</td>
</tr>
</thead>
<tbody id="table_body_Test">
</tbody>
</table>
<button id="submitBtn" onclick="ActionData()">Next</button>

ES6 brought new methods that simplify the code and its reading
const tableBody = document.querySelector('#testTable tbody' );
document.querySelector('#submitBtn').onclick=()=>
{
let agents = [];
console.clear();
for (let rowX of tableBody.rows )
{
let
agent = rowX.cells[0].textContent,
checkbox = rowX.cells[1].querySelector('input[type=checkbox]')
;
console.log( 'agent:', agent, 'checked:', checkbox.checked);
if (checkbox.checked) { agents.push(agent); }
}
console.log( 'agents (array):', agents.join(' / '));
}
/// bonus info :
/*
rootRefReAgents.on("child_added", snap=>{
let
newRow = tableBody.insertRow(-1);
newRow.insertCell(0).textContent = snap.child("Name").val();
newRow.insertCell(1).innerHTML = '<input type="Checkbox">';
});
*/
#testTable { margin: auto; border-collapse: collapse }
#testTable thead tr {
color: #D2002E;
background: #FFCC01;
height:32px;
font-weight: bold;
}
#testTable tr:nth-child(even) {background-color: lightgrey }
#testTable td { border:1px solid grey; padding: 0 20px; }
#testTable td:nth-child(2) { text-align: center }
<table id="testTable">
<thead>
<tr> <td>Agents</td> <td>Select</td> </tr>
</thead>
<tbody>
<tr> <td>AMC</td> <td> <input type="checkbox" > </td> </tr>
<tr> <td>Mygulfex</td> <td> <input type="checkbox" > </td> </tr>
<tr> <td>topStar</td> <td> <input type="checkbox" > </td> </tr>
<tr> <td>WMC</td> <td> <input type="checkbox" > </td> </tr>
</tbody>
</table>
<button id="submitBtn" >see Selects in console</button>

I want to append my data below the table and search when user clicks in the product id field

I have created a table and I want to add the data below the table but data is being added at the top,
I have written a search property when user enters the product id the data should be shown and can't figure out where my code went wrong,
I want to add serch field to all the buttons should I write the code many times is there any solution?
$(document).ready(function() {
var url = "http://34.201.147.118:3001/getAllData";
$.getJSON(url, function(data) {
console.log(data);
//console.log("AllData")
var obj = data['AllData'];
//console.log(obj)
for (var i = 0; i < obj.length; i++) {
var tr = "<tr>" +
"<td>" + obj[i]["ProductID"] + "</td>" +
"<td>" + obj[i]["Title"] + "</td>" +
$("#mytable").append('<tr class="child"> tr</tr>');
}
});
});
function goodCall() {
$(document).ready(function() {
$("#id").on("keyup", function() {
var value = $(this).val().toLowerCase();
$("#myTable tr").filter(function() {
$(this).toggle($(this).text().toLowerCase().indexOf(value) > -1)
});
});
});
}
body {
background-image: url("banner.jpg");
background-size: 100%;
}
#mytable {
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
width: 100%;
}
#mytable td,
#customers th {
border: 1px solid #ddd;
padding: 8px;
}
#mytable tr:hover {
background-color: #ddd;
}
#mytable th {
padding-top: 12px;
padding-bottom: 12px;
text-align: left;
background-color: #4CAF50;
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!-- Page Content -->
<div style="margin-left:25%">
<h1 style="color:white;">TITLE DETAILS</h1>
<div class="w3-container" id="add">
<div class="" style="color:white;">
<form name="test_form" id="101">
<table class="table borderless">
<tr>
<th>Title Identifier</th>
</tr>
<tr>
<td style="border:none">
<b>PRODUCT ID</b>
<br>
<input type="text" id="id" style="color:black;" required></td>
<td style="border:none"></td>
<td style="border:none">
<b>PRODUCT TITLE</b>
<br><input type="text" id="title" style="color:black;" required></td>
</tr>
<tr>
<td style="border:none">
<br> <b>director </b>
<br> <input type="text" id="ter" style="color:black;" required>
</td>
<td style="border:none"></td>
<td style="border:none">
<b>producer</b>
<br> <input type="text" id="media" style="color:black;" required>
</td>
</tr>
</table>
</form>
<input type="button" onclick="goodCall()" value="Search" style="color:Red;">
<table id='mytable'>
<tr>
<th>ID</th>
<th>PRODUCTTITLE</th>
</tr>
<div>
<br><br>
</div>
</table>
</div>
</div>
</div>

Here you have a basic functional example https://jsfiddle.net/0Lvqcd8t/39/
You should change this:
var tr = "<tr>" +
"<td>" + obj[i]["ProductID"] + "</td>" +
"<td>" + obj[i]["Title"] + "</td>" +
$("#mytable").append('<tr class="child"> tr</tr>');
for this:
var tr = "<td>" + obj[i]["ProductID"] + "</td>" +
"<td>" + obj[i]["Title"] + "</td>" +
$("#mytable").append('<tr class="child">'+ tr+'</tr>');
In the first case you are creating <tr><tr class="child><td></td></tr> (first <tr> is wrong) and browser will render something like <tr>tr</tr><tr class='child'>empty</tr> also, tr var in first example is not interpreted as variable, so you should place it like +tr+. I've made a basic filter function at the end that works with id.

Toggling nested Table Columns - html, jQuery

I'm relatively new to jQuery but more seasoned using html and css.
I'm currently working on creating a new report that displays a nested table with quarterly results.Sample Quarterly Report
When a user clicks the img next to Q1 or Q2 table row - my expectation is for the Week (wk1 - wkn) columns to hide/show (toggle) as needed.
Additionally, when week columns are hidden, i would like the Quartely column(s) to collapse and dynamically show the sum of hidden weeks (wk1 - wkn).
Most of the code is borrowed from other posts but unfortunately, i was unable to find one that collapses and sums nested columns.
Thanks in advance for your help!
$(document).ready(function () {
var mImg = "http://t1.gstatic.com/images?q=tbn:1PS9x2Ho4LHpaM:http://www.unesco.org/ulis/imag/minus.png";
var pImg = "http://t3.gstatic.com/images?q=tbn:4TZreCjs_a1eDM:http://www.venice.coe.int/images/plus.png";
var sum1 = 0;
$('tr').find('.combat1').each(function () {
var combat1 = $(this).text();
if (!isNaN(combat1) && combat1.length !== 0) {
sum1 += parseFloat(combat1);
}
});
var sum2 = 0;
$('tr').find('.combat2').each(function () {
var combat2 = $(this).text();
if (!isNaN(combat2) && combat2.length !== 0) {
sum2 += parseFloat(combat2);
}
});
var sum3 = 0;
$('tr').find('.combat3').each(function () {
var combat3 = $(this).text();
if (!isNaN(combat3) && combat3.length !== 0) {
sum3 += parseFloat(combat3);
}
});
$('.total-combat1').html(sum1);
$('.total-combat2').html(sum2);
$('.total-combat3').html(sum3);
$('.header').click(function() {
//$('td:nth-child(2)').hide();
// if your table has header(th), use this
$('td:nth-child(2),th:nth-child(2)').toggle();
});
});
body {
background: #80dfff;
color: #d5d4d4;
font-family: Helvetica, Arial, sans-serif;
font-size: 12px;
margin: 0;
overflow-x: auto;
padding: 30px;
}
table {
background: white;
border-collapse: collapse;
border: 1px #393939 solid;
color: black;
margin: 1em 1em 1em 0;
}
thead {
border-collapse: collapse;
color: black;
}
th, td {
border: 1px #aaa solid;
padding: 0.2em;
}
<table>
<thead>
<tr><th colspan=8>2015</th></tr>
<tr><th colspan=4 class="header">Q1
<img src="http://t1.gstatic.com/images?q=tbn:1PS9x2Ho4LHpaM:http://www.unesco.org/ulis/imag/minus.png" />
</th>
<th colspan=3 class="header">Q2
<img src="http://t1.gstatic.com/images?q=tbn:1PS9x2Ho4LHpaM:http://www.unesco.org/ulis/imag/minus.png" />
</th>
<th></th>
</tr>
<tr>
<th>WK1</th>
<th>WK2</th>
<th>WK3</th>
<th>WK4</th>
<th>WK1</th>
<th>WK2</th>
<th>WK3</th>
<th>Total</th>
</tr>
</thead>
<tbody>
<tr>
<td class="combat1">8170</td>
<td class="combat1">6504</td>
<td class="combat1">6050</td>
<td class="combat1">6050</td>
<td class="combat1">7050</td>
<td class="combat1">7050</td>
<td class="combat1">7050</td>
<td class="total-combat1"></td>
</tr>
<tr>
<td class="combat2">8500</td>
<td class="combat2">10200</td>
<td class="combat2">7650</td>
<td class="combat2">7650</td>
<td class="combat2">8650</td>
<td class="combat2">8650</td>
<td class="combat2">8650</td>
<td class="total-combat2"></td>
</tr>
<tr>
<td class="combat3">9185</td>
<td class="combat3">5515</td>
<td class="combat3">6185</td>
<td class="combat3">7185</td>
<td class="combat3">9185</td>
<td class="combat3">9185</td>
<td class="combat3">9185</td>
<td class="total-combat3"></td>
</tr>
</tbody>
</table>

If you need to toggle the visibility of Q1 or Q2 you can change the header click event in order to obtain the effect produced in the following snippet.
The problem is to select all the cells of your interest and than toggle the visibility.
One way is to limit the cells selected using the jQuery :lt and :gt plus the css
$(function () {
var mImg = "http://t1.gstatic.com/images?q=tbn:1PS9x2Ho4LHpaM:http://www.unesco.org/ulis/imag/minus.png";
var pImg = "http://t3.gstatic.com/images?q=tbn:4TZreCjs_a1eDM:http://www.venice.coe.int/images/plus.png";
var sum1 = 0;
$('tr').find('.combat1').each(function () {
var combat1 = $(this).text();
if (!isNaN(combat1) && combat1.length !== 0) {
sum1 += parseFloat(combat1);
}
});
var sum2 = 0;
$('tr').find('.combat2').each(function () {
var combat2 = $(this).text();
if (!isNaN(combat2) && combat2.length !== 0) {
sum2 += parseFloat(combat2);
}
});
var sum3 = 0;
$('tr').find('.combat3').each(function () {
var combat3 = $(this).text();
if (!isNaN(combat3) && combat3.length !== 0) {
sum3 += parseFloat(combat3);
}
});
$('.total-combat1').html(sum1);
$('.total-combat2').html(sum2);
$('.total-combat3').html(sum3);
// The new header click event
$('.header').click(function(e) {
var isVisible = false;
var strSelector = '';
var everyTotIndex = 4;
if (this.innerText.trim() == 'Q1') {
everyTotIndex = 4;
strSelector = 'td:not([colspan="4"]):lt(4), th:not([colspan="4"]):lt(4)';
} else {
everyTotIndex = 3;
strSelector = 'td:not([colspan="3"]):lt(7):gt(3), th:not([colspan="3"]):lt(7):gt(3)';
}
$(this).parents('table').find('tr:eq(2), tbody > tr').find(strSelector).css('display', function(index, value) {
if (this.style.display == 'none') {
isVisible = true;
if ((index % everyTotIndex) == 0) {
$(this).parent().find('td[colspan="' + everyTotIndex + '"], th[colspan="' + everyTotIndex + '"]').remove();
}
return '';
}
if ((index % everyTotIndex) == 0) {
if (this.tagName.toLowerCase() == 'th') {
$('<th colspan="' + everyTotIndex + '" class="total">Total</th>').insertBefore($(this));
} else {
$('<td colspan="' + everyTotIndex + '" class="combat1 total">0</td>').insertBefore($(this));
var obj = $(this).parent().find('td[colspan="' + everyTotIndex + '"]');
obj.text(+obj.text() + parseInt(this.textContent));
}
} else {
if (this.tagName.toLowerCase() == 'td') {
var obj = $(this).parent().find('td[colspan="' + everyTotIndex + '"]');
obj.text(+obj.text() + parseInt(this.textContent));
}
}
return 'none';
});
if (isVisible) {
$(this).find('img').attr('src', "http://www.unesco.org/ulis/imag/minus.png");
} else {
$(this).find('img').attr('src', "http://www.unesco.org/ulis/imag/plus.png");
}
});
});
body {
background: #80dfff;
color: #d5d4d4;
font-family: Helvetica, Arial, sans-serif;
font-size: 12px;
margin: 0;
overflow-x: auto;
padding: 30px;
}
table {
background: white;
border-collapse: collapse;
border: 1px #393939 solid;
color: black;
margin: 1em 1em 1em 0;
}
thead {
border-collapse: collapse;
color: black;
}
th, td {
border: 1px #aaa solid;
padding: 0.2em;
}
<script src="http://code.jquery.com/jquery-1.11.3.js"></script>
<table>
<thead>
<tr><th colspan=8>2015</th></tr>
<tr><th colspan=4 class="header">Q1
<img src="http://t1.gstatic.com/images?q=tbn:1PS9x2Ho4LHpaM:http://www.unesco.org/ulis/imag/minus.png" />
</th>
<th colspan=3 class="header">Q2
<img src="http://t1.gstatic.com/images?q=tbn:1PS9x2Ho4LHpaM:http://www.unesco.org/ulis/imag/minus.png" />
</th>
<th></th>
</tr>
<tr>
<th>WK1</th>
<th>WK2</th>
<th>WK3</th>
<th>WK4</th>
<th>WK1</th>
<th>WK2</th>
<th>WK3</th>
<th>Total</th>
</tr>
</thead>
<tbody>
<tr>
<td class="combat1">8170</td>
<td class="combat1">6504</td>
<td class="combat1">6050</td>
<td class="combat1">6050</td>
<td class="combat1">7050</td>
<td class="combat1">7050</td>
<td class="combat1">7050</td>
<td class="total-combat1"></td>
</tr>
<tr>
<td class="combat2">8500</td>
<td class="combat2">10200</td>
<td class="combat2">7650</td>
<td class="combat2">7650</td>
<td class="combat2">8650</td>
<td class="combat2">8650</td>
<td class="combat2">8650</td>
<td class="total-combat2"></td>
</tr>
<tr>
<td class="combat3">9185</td>
<td class="combat3">5515</td>
<td class="combat3">6185</td>
<td class="combat3">7185</td>
<td class="combat3">9185</td>
<td class="combat3">9185</td>
<td class="combat3">9185</td>
<td class="total-combat3"></td>
</tr>
</tbody>
</table>

I tried to figure out what you was trying to do... Correct if me I wrong: you're trying to toggle the set of columns under, for e.g. Q1, when you click on the header column? If so, here the code. I modified your code, I added to nested tables under the main table to organize/ divide the two sets of information so I can select easily with jQuery which one I'm going to toggle.
$(document).ready(function() {
var mImg = "http://t1.gstatic.com/images?q=tbn:1PS9x2Ho4LHpaM:http://www.unesco.org/ulis/imag/minus.png";
var pImg = "http://t3.gstatic.com/images?q=tbn:4TZreCjs_a1eDM:http://www.venice.coe.int/images/plus.png";
var sum1 = 0;
$('tr').find('.combat1').each(function() {
var combat1 = $(this).text();
if (!isNaN(combat1) && combat1.length !== 0) {
sum1 += parseFloat(combat1);
}
});
var sum2 = 0;
$('tr').find('.combat2').each(function() {
var combat2 = $(this).text();
if (!isNaN(combat2) && combat2.length !== 0) {
sum2 += parseFloat(combat2);
}
});
var sum3 = 0;
$('tr').find('.combat3').each(function() {
var combat3 = $(this).text();
if (!isNaN(combat3) && combat3.length !== 0) {
sum3 += parseFloat(combat3);
}
});
$('.header-1').click(function() {
$("#table1").toggle();
});
$('.header-2').click(function() {
$("#table2").toggle();
});
});
body {
color: #d5d4d4;
font-family: Helvetica, Arial, sans-serif;
font-size: 12px;
margin: 0;
overflow-x: auto;
padding: 30px;
}
table {
background: white;
border-collapse: collapse;
border: 1px #393939 solid;
color: black;
margin: 0;
padding: 0;
}
thead {
border-collapse: collapse;
color: black;
}
th,
td,
tr {
border: 1px #aaa solid;
padding: 0;
}
td.combat {
padding: 0.2em;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
<table id="myTable">
<thead>
<tr>
<th colspan=2>2015</th>
</tr>
<tr>
<th class="header-1">Q1
<img src="http://t1.gstatic.com/images?q=tbn:1PS9x2Ho4LHpaM:http://www.unesco.org/ulis/imag/minus.png" />
</th>
<th class="header-2">Q2
<img src="http://t1.gstatic.com/images?q=tbn:1PS9x2Ho4LHpaM:http://www.unesco.org/ulis/imag/minus.png" />
</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<table id="table1">
<tr>
<th>WK1</th>
<th>WK2</th>
<th>WK3</th>
<th>WK4</th>
</tr>
<tr>
<td class="combat combat1">8170</td>
<td class="combat combat1">6504</td>
<td class="combat combat1">6050</td>
<td class="combat combat1">6050</td>
</tr>
<tr>
<td class="combat combat1">8170</td>
<td class="combat combat1">6504</td>
<td class="combat combat1">6050</td>
<td class="combat combat1">6050</td>
</tr>
</table>
</td>
<td>
<table id="table2">
<tr>
<th>WK1</th>
<th>WK2</th>
<th>WK3</th>
</tr>
<tr>
<td class="combat combat2">7050</td>
<td class="combat combat2">7050</td>
<td class="combat combat2">7050</td>
</tr>
<tr>
<td class="combat combat2">7050</td>
<td class="combat combat2">7050</td>
<td class="combat combat2">7050</td>
</tr>
</table>
</td>
<td>
<table>
<tr>
<td></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td></td>
</tr>
</table>
</td>
</tr>
</tbody>
</table>