Develop Reference

Why doesn't my click handler show the correct table element?

I have JavaScript code which on button click shows its table. I have 4 buttons (and tables, obviously). Probably there will be more, so making function to each one of them will be bad idea. That being said, I made this code below to slightly minimize the amount of code. But, it doesn't work, and I don't quite understand why.
document.addEventListener('DOMContentLoaded', function() {
const tab1 = document.getElementById('tab1');
const tab2 = document.getElementById('tab2');
const tab3 = document.getElementById('tab3');
const tab4 = document.getElementById('tab4');
const currentTable = ".table";
const tables = Array.from(document.querySelectorAll(currentTable))
const table1 = document.querySelector('.table1');
const table2 = document.querySelector('.table2');
const table3 = document.querySelector('.table3');
const table4 = document.querySelector('.table4');
//this doesnt work
function showTable(e) {
const target = e.target;
if (!target || !target.matches(currentTable)) {
return;
}
tables.forEach(elem => elem.classList.remove('active'));
tables.forEach(elem => elem.classList.remove('op'));
e.target.classList.add('active');
setTimeout(function() {
e.target.classList.add('op');
}, 20);
};
tab1.addEventListener('click', showTable(table1));
tab2.addEventListener('click', showTable(table2));
tab3.addEventListener('click', showTable(table3));
tab4.addEventListener('click', showTable(table4));
});
//this one for buttons
document.addEventListener('DOMContentLoaded', function() {
const selector = '.table_option';
const elems = Array.from(document.querySelectorAll(selector));
const navigation = document.querySelector('.table-nav');
function makeActive(e) {
const target = e.target;
if (!target || !target.matches(selector)) {
return;
}
elems.forEach(elem => elem.classList.remove('active'));
e.target.classList.add('active');
};
navigation.addEventListener('click', makeActive);
});
.table_container {
display: flex;
width: 100%;
}
.table_content-left {
width: 30%;
margin-top: 50px;
}
.table_content-left .table_option {
font-size: 16px;
font-weight: 700;
cursor: pointer;
}
.table_content-left .table-nav li:not(:last-child) {
margin-bottom: 10px;
}
.table_content-left .table_option.active {
color: #eb5e28;
border-left: 2px solid #252422;
padding: 10px 15px;
transition: all 0.8s;
}
.table_content-right {
width: 70%;
}
.table {
display: none;
opacity: 0;
transition: opacity 900ms;
}
.op {
opacity: 1;
}
.table_title {
font-size: 24px;
font-weight: 700;
}
.table_content table {
border-collapse: collapse;
}
.table_content td,
.table_content th {
text-align: left;
padding: 8px;
width: 100%;
font-weight: 600;
}
.table_content td {
background-color: #ccc5b9;
}
.table_content th:first-child {
padding: 8px 0px;
}
.table_content td:nth-child(2n+1) {
background-color: #403d39;
color: #fff;
}
.table_content tr:nth-child(even) {
background-color: #ccc5b9;
color: #fff;
}
.table_content tr:nth-child(even) td:nth-child(1n+1) {
background-color: #403d39;
}
.table_content tr:nth-child(even) td:nth-child(2n+1) {
background-color: #ccc5b9;
color: #252422;
}
.active {
display: block;
}
<div class="table_container ">
<div class="table_content-left">
<ul role="list" class="table-nav">
<li><a class="table_option active" id="tab1">button1</a></li>
<li><a class="table_option" id="tab2">button2</a></li>
<li><a class="table_option" id="tab3">button3</a></li>
<li><a class="table_option" id="tab4">button4</a></li>
</ul>
</div>
<div class="table_content-right">
<div class="table table1 active op">
<div class="table_title">1</div>
<table class="table_content" cellspacing="0">
<tr>
<th>Lorem</th>
<th>5</th>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
</table>
</div>
<div class="table2 table">
<div class="table_title">2</div>
<table class="table_content" cellspacing="0">
<tr>
<th>Lorem</th>
<th>5</th>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
</table>
</div>
<div class="table3 table">
<div class="table_title">3</div>
<table class="table_content" cellspacing="0">
<tr>
<th>Lorem</th>
<th>5</th>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
</table>
</div>
<div class="table4 table">
<div class="table_title">4</div>
<table class="table_content" cellspacing="0">
<tr>
<th>Lorem</th>
<th>5</th>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
</table>
</div>
</div>
</div>
Where am I wrong? Can someone point me to the problem I am facing?

I like to take a simple index-based approach to things like this. If that doesn't suit, you could add indices to the tables using data attributes which correspond to tab index.
Some other tips...
You were creating event listeners in every call of showTable(). That would result in a pile of event handlers you don't want.
You were using a rather roundabout way to collect elements (with Array.from(). That's not needed.
Multiple classes can be added and removed as a list.
document.addEventListener('DOMContentLoaded', function() {
const tabs = document.querySelectorAll('.table_option');
const tables = document.querySelectorAll('.table');
tabs.forEach(tab => {
tab.addEventListener('click', e => {
const tabEl = e.currentTarget.parentNode;
const tabIndex = [...tabEl.parentNode.children].indexOf(tabEl);
showTable(tabIndex);
});
});
const showTable = index => {
tables.forEach(elem => elem.classList.remove('active', 'op'));
tables[index].classList.add('active');
setTimeout(() => {
tables[index].classList.add('op');
}, 20);
tabs.forEach(elem => elem.classList.remove('active', 'op'));
tabs[index].classList.add('active');
}
});
.table_container {
display: flex;
width: 100%;
}
.table_content-left {
width: 30%;
margin-top: 50px;
}
.table_content-left .table_option {
font-size: 16px;
font-weight: 700;
cursor: pointer;
}
.table_content-left .table-nav li:not(:last-child) {
margin-bottom: 10px;
}
.table_content-left .table_option.active {
color: #eb5e28;
border-left: 2px solid #252422;
padding: 10px 15px;
transition: all 0.8s;
}
.table_content-right {
width: 70%;
}
.table {
display: none;
opacity: 0;
transition: opacity 900ms;
}
.op {
opacity: 1;
}
.table_title {
font-size: 24px;
font-weight: 700;
}
.table_content table {
border-collapse: collapse;
}
.table_content td,
.table_content th {
text-align: left;
padding: 8px;
width: 100%;
font-weight: 600;
}
.table_content td {
background-color: #ccc5b9;
}
.table_content th:first-child {
padding: 8px 0px;
}
.table_content td:nth-child(2n+1) {
background-color: #403d39;
color: #fff;
}
.table_content tr:nth-child(even) {
background-color: #ccc5b9;
color: #fff;
}
.table_content tr:nth-child(even) td:nth-child(1n+1) {
background-color: #403d39;
}
.table_content tr:nth-child(even) td:nth-child(2n+1) {
background-color: #ccc5b9;
color: #252422;
}
.active {
display: block;
}
<div class="table_container ">
<div class="table_content-left">
<ul role="list" class="table-nav">
<li><a class="table_option active" id="tab1">button1</a></li>
<li><a class="table_option" id="tab2">button2</a></li>
<li><a class="table_option" id="tab3">button3</a></li>
<li><a class="table_option" id="tab4">button4</a></li>
</ul>
</div>
<div class="table_content-right">
<div class="table table1 active op">
<div class="table_title">1</div>
<table class="table_content" cellspacing="0">
<tr>
<th>Lorem</th>
<th>5</th>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
</table>
</div>
<div class="table2 table">
<div class="table_title">2</div>
<table class="table_content" cellspacing="0">
<tr>
<th>Lorem</th>
<th>5</th>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
</table>
</div>
<div class="table3 table">
<div class="table_title">3</div>
<table class="table_content" cellspacing="0">
<tr>
<th>Lorem</th>
<th>5</th>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
</table>
</div>
<div class="table4 table">
<div class="table_title">4</div>
<table class="table_content" cellspacing="0">
<tr>
<th>Lorem</th>
<th>5</th>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
<tr>
<td>Lorem</td>
<td>5</td>
</tr>
</table>
</div>
</div>
</div>

Check table and make tr content bold based on values of two matching columns in same table

I am working on responsive table and want to make row content bold if it matches the current date.
I am keeping first-child th & td hidden as i only need it for certain function
Based on value in <td data-label="TodaysDate">06-05-2020</td> and <td data-label="Date">05-05-2020</td>
if value if TodaysDate = Date then i need to make this row bold.
how can i do this using javascript
https://codepen.io/KGuide/pen/MWwMZzP
function compareCellValues() {
var rows = $(".ramadan-time").find("tbody tr"); //returns all table rows
rows.each(function() { //iterate over each row.
var thisRow = $(this), //this is the current row
TodaysDate = thisRow.find(".TodaysDate"), //this is the first value
sDate = thisRow.find(".Date"); //this is the second value
if (TodaysDate.text() !== sDate.text()) {
thisRow.css("font-weight", "bold");
}
thisRow.find(".TodaysDate").text(parseInt(TodaysDate.text()) - parseInt(sDate.text()));
});
}
window.onload = compareCellValues();
body {
font-family: "Open Sans", sans-serif;
line-height: 1.25;
}
.ramadan-time > thead tr th:first-child{color:red; display:none;}
.ramadan-time > tbody tr td:first-child{color:red; display:none;}
table {
border: 1px solid #ccc;
border-collapse: collapse;
margin: 0;
padding: 0;
width: 100%;
table-layout: fixed;
}
table tr {
background-color: #f8f8f8;
border: 1px solid #ddd;
padding: .35em;
}
table th,
table td {
padding: .625em;
text-align: center;
font-size: 12px;
}
table th {
font-size: .85em;
font-size: 12px;
letter-spacing: .1em;
text-transform: uppercase;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
#media screen and (max-width: 380px) {
table {
border: 0;
}
table caption {
font-size: 1.3em;
}
table thead {
border: none;
clip: rect(0 0 0 0);
height: 1px;
margin: -1px;
overflow: hidden;
padding: 0;
position: absolute;
width: 1px;
}
table tr {
border-bottom: 3px solid #ddd;
display: block;
margin-bottom: .625em;
}
table td {
border-bottom: 1px solid #ddd;
display: block;
font-size: .8em;
text-align: right;
}
table td::before {
/*
* aria-label has no advantage, it won't be read inside a table
content: attr(aria-label);
*/
content: attr(data-label);
float: left;
font-weight: bold;
text-transform: uppercase;
}
table td:last-child {
border-bottom: 0;
}
}
<table class="ramadan-time">
<thead>
<tr>
<th scope="col">TodaysDate</th>
<th scope="col">Date</th>
<th scope="col">Day</th>
<th scope="col">Ramadan</th>
<th scope="col">April/May</th>
<th scope="col">Imsak</th>
<th scope="col">Fajr</th>
<th scope="col">Sunrise</th>
<th scope="col">Dhuhr</th>
<th scope="col">Asr</th>
<th scope="col">Maghrib</th>
<th scope="col">Isha</th>
</tr>
</thead>
<tbody>
<tr>
<td class="TodaysDate" data-label="TodaysDate">06-05-2020</td>
<td class="Date" data-label="Date">05-05-2020</td>
<td data-label="Day">Friday</td>
<td data-label="Ramadan">1</td>
<td data-label="April/May">24</td>
<td data-label="Imsak">4:17</td>
<td data-label="Fajr">4:27</td>
<td data-label="Sunrise">5:45</td>
<td data-label="Dhuhr">12:20</td>
<td data-label="Asr">3:49</td>
<td data-label="Maghrib">6:49</td>
<td data-label="Isha">8:07</td>
</tr>
<tr>
<td class="TodaysDate" data-label="TodaysDate">6-05-2020</td>
<td class="Date" data-label="Date">06-05-2020</td>
<td data-label="Day">Saturday</td>
<td data-label="Ramadan">2</td>
<td data-label="April/May">25</td>
<td data-label="Imsak">4:16</td>
<td data-label="Fajr">4:26</td>
<td data-label="Sunrise">5:44</td>
<td data-label="Dhuhr">12:20</td>
<td data-label="Asr">3:50</td>
<td data-label="Maghrib">6:49</td>
<td data-label="Isha">8:08</td>
</tr>
<tr>
<td class="TodaysDate" data-label="TodaysDate">6-05-2020</td>
<td class="Date" data-label="Date">07-05-2020</td>
<td data-label="Day">Sunday</td>
<td data-label="Ramadan">3</td>
<td data-label="April/May">26</td>
<td data-label="Imsak">4:15</td>
<td data-label="Fajr">4:25</td>
<td data-label="Sunrise">5:43</td>
<td data-label="Dhuhr">12:19</td>
<td data-label="Asr">3:48</td>
<td data-label="Maghrib">6:50</td>
<td data-label="Isha">8:10</td>
</tr>
</tbody>
</table>
I am using following code to
function compareCellValues() {
var rows = $(".ramadan-time").find("tbody tr"); //returns all table rows
rows.each(function() { //iterate over each row.
var thisRow = $(this), //this is the current row
TodaysDate = thisRow.find(".TodaysDate"), //this is the first value
sDate = thisRow.find(".Date"); //this is the second value
if (TodaysDate.text() !== sDate.text()) {
thisRow.css("font-weight", "bold");
}
thisRow.find(".TodaysDate").text(parseInt(TodaysDate.text()) - parseInt(sDate.text()));
});
}
window.onload = compareCellValues();

It working for me i had put date in as 6-05-2020 & comparing it with 06-05-2020
after fixing the data script worked fine.
<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>CodePen - A Pen by KGuide</title>
<link rel="stylesheet" href="./style.css">
</head>
<body>
<!-- partial:index.partial.html -->
<table class="ramadan-time">
<thead>
<tr>
<th scope="col">TodaysDate</th>
<th scope="col">Date</th>
<th scope="col">Day</th>
<th scope="col">Ramadan</th>
<th scope="col">April/May</th>
<th scope="col">Imsak</th>
<th scope="col">Fajr</th>
<th scope="col">Sunrise</th>
<th scope="col">Dhuhr</th>
<th scope="col">Asr</th>
<th scope="col">Maghrib</th>
<th scope="col">Isha</th>
</tr>
</thead>
<tbody>
<tr>
<td class="TodaysDate" data-label="TodaysDate">06-05-2020</td>
<td class="Date" data-label="Date">05-05-2020</td>
<td data-label="Day">Friday</td>
<td data-label="Ramadan">1</td>
<td data-label="April/May">24</td>
<td data-label="Imsak">4:17</td>
<td data-label="Fajr">4:27</td>
<td data-label="Sunrise">5:45</td>
<td data-label="Dhuhr">12:20</td>
<td data-label="Asr">3:49</td>
<td data-label="Maghrib">6:49</td>
<td data-label="Isha">8:07</td>
</tr>
<tr>
<td class="TodaysDate" data-label="TodaysDate">06-05-2020</td>
<td class="Date" data-label="Date">06-05-2020</td>
<td data-label="Day">Saturday</td>
<td data-label="Ramadan">2</td>
<td data-label="April/May">25</td>
<td data-label="Imsak">4:16</td>
<td data-label="Fajr">4:26</td>
<td data-label="Sunrise">5:44</td>
<td data-label="Dhuhr">12:20</td>
<td data-label="Asr">3:50</td>
<td data-label="Maghrib">6:49</td>
<td data-label="Isha">8:08</td>
</tr>
<tr>
<td class="TodaysDate" data-label="TodaysDate">06-05-2020</td>
<td class="Date" data-label="Date">07-05-2020</td>
<td data-label="Day">Sunday</td>
<td data-label="Ramadan">3</td>
<td data-label="April/May">26</td>
<td data-label="Imsak">4:15</td>
<td data-label="Fajr">4:25</td>
<td data-label="Sunrise">5:43</td>
<td data-label="Dhuhr">12:19</td>
<td data-label="Asr">3:48</td>
<td data-label="Maghrib">6:50</td>
<td data-label="Isha">8:10</td>
</tr>
</tbody>
</table>

Variable Table Inner components width not working html css

I am trying to build this excel table with html and css. The problem i kept facing is the when i try to add different number of columns for different rows, It surpasses the border limit and extends by itself. My intent is to replicate the contents of the picture.
table
{
table-layout: fixed;
border-collapse: collapse;
width: 100%;
border: 3px solid #151515;
}
th, td
{
border: 1px solid #151515;
padding: 12px;
text-align: center;
}
th
{
font-weight: bold;
}
tfoot tr:nth-child(2)
{
font-weight: normal;
height: 100px;
}
.colored td
{
background-color: #aaaaaa;
}
<table>
<tbody>
<tr>
<th colspan="4" class="title">PURCHASE DETAILS</th>
</tr>
<tr class="colored">
<th rowspan="2">BUDGET CODE:</th>
<td>Account Code</td>
<td>Cost Center</td>
<td>Project Code</td>
<td>DEA</td>
</tr>
<tr>
<td>5458</td>
<td>22222</td>
<td>3658954</td>
<td>95874</td>
</tr>
<tr>
<th>PO Number:</th>
<td>PO/SC/2010/33</td>
<th>Supplier:</th>
<td>STORM TECH</td>
</tr>
<tr>
<th>SOF:</th>
<td>00254584</td>
<th>Value (Purchase Price USD):</th>
<td><b>1,084.89</b></td>
</tr>
</tbody>
<tfoot>
<tr>
<th colspan="2">Plan After Award Ends:</th>
<td colspan="2">Carry Over</td>
</tr>
</tfoot>
</table>
If anybody can assist please.

Not sure table layout is the best choice here, but it can be done. Just create more cells per row and span the cells you need over 2 or 3 "cells"
table
{
table-layout: fixed;
border-collapse: collapse;
width: 100%;
border: 3px solid #151515;
}
th, td
{
border: 1px solid #151515;
padding: 12px;
text-align: center;
}
th
{
font-weight: bold;
}
tfoot tr:nth-child(2)
{
font-weight: normal;
height: 100px;
}
.colored td
{
background-color: #aaaaaa;
}
<table>
<tbody>
<tr>
<th colspan="8" class="title">PURCHASE DETAILS</th>
</tr>
<tr class="colored">
<th rowspan="2">BUDGET CODE:</th>
<td colspan="2">Account Code</td>
<td colspan="2">Cost Center</td>
<td colspan="2">Project Code</td>
<td>DEA</td>
</tr>
<tr>
<td colspan="2">5458</td>
<td colspan="2">22222</td>
<td colspan="2">3658954</td>
<td>95874</td>
</tr>
<tr>
<th>PO Number:</th>
<td colspan="3">PO/SC/2010/33</td>
<th colspan="2">Supplier:</th>
<td colspan="2">STORM TECH</td>
</tr>
<tr>
<th>SOF:</th>
<td colspan="3">00254584</td>
<th colspan="2">Value (Purchase Price USD):</th>
<td colspan="2"><b>1,084.89</b></td>
</tr>
</tbody>
<tfoot>
<tr>
<th colspan="2">Plan After Award Ends:</th>
<td colspan="6">Carry Over</td>
</tr>
</tfoot>
</table>

Different width of column in the HTML table

I am trying to make the width of tds different in the HTML tale but I am unable to do so.
HTML Code
<table class="TFtable" border="1">
<tr>
<th >Heading1</th>
<th >Heading2</th>
<th >Heading3</th>
</tr>
<tr>
<td>Text jshdf hjkhsdk jhfkhds fkjhf sdjkh dsfkjh</td>
<td >Text</td>
<td >Text</td>
</tr>
<tr>
<td>Text</td>
<td>Text</td>
<td>Text</td>
</tr>
<tr>
<td>Text</td>
<td>Text</td>
<td>Text</td>
</tr>
</table>
CSS
.TFtable {
width: 50%;
border-collapse: collapse;
table-layout: fixed;
}
.TFtable tr {
padding: 7px;
border: #4e95f4 1px solid;
}
/* provide some minimal visual accomodation for IE8 and below */
.TFtable tr {
background: #FFFFFF;
}
/* Define the background color for all the ODD background rows */
.TFtable tr:nth-child(odd) {
background: #FFFFFF;
}
/* Define the background color for all the EVEN background rows */
.TFtable tr:nth-child(even) {
background: #BCCECE;
}
.TFtable td{
table-layout: fixed;
width: 20px;
height:auto;
overflow: auto;
}
Link to JSFiddle.
Here

You can use this HTML Code to make different td`s width without using CSS
<table border="1" width="100%;">
<tr>
<th >Heading1</th>
<th >Heading2</th>
<th >Heading3</th>
</tr>
<tr>
<td width="20%">Text jshdf hjkhsdk jhfkhds fkjhf sdjkh dsfkjh</td>
<td width="30%">Text</td>
<td width="50%">Text</td>
</tr>
<tr>
<td>Text</td>
<td>Text</td>
<td>Text</td>
</tr>
<tr>
<td>Text</td>
<td>Text</td>
<td>Text</td>
</tr>
</table>

Hide/Show HTML tables [closed]

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I have an HTML document which contains tables. Some tables are subtables of other ones. You can have an example here:
HTML :
<table class='top'>
<tr class='greyrow'>
<td>TopLevel</td>
<td>A</td>
</tr>
</table>
<table class='sub1'>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>B</td>
</tr>
</table>
<table class='sub2'>
<tr class='greyrow'>
<td>SubLevel 2</td>
<td>C</td>
</tr>
</table>
<table class='sub2'>
<tr class='greyrow'>
<td>SubLevel 2</td>
<td>D</td>
</tr>
</table>
<table class='sub1'>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>E</td>
</tr>
</table>
<table class='sub2'>
<tr class='greyrow'>
<td>SubLevel 2</td>
<td>F</td>
</tr>
</table>
<table class='top'>
<tr class='greyrow'>
<td>TopLevel</td>
<td>G</td>
</tr>
</table>
<table class='sub1'>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>H</td>
</tr>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>I</td>
</tr>
</table>
CSS :
table {
border-collapse: collapse;
border-width: 0px 0;
box-shadow: 3px 3px 4px #AAA;
}
.greyrow{
background-color: #c7c7c7;
font-size: 16px;
text-align: center;
color: black;
font-family: Verdana;
}
td{
width: 100px;
}
.top{
margin-bottom: 10px;
}
.sub1{
display: none;
margin-left: 20px;
margin-bottom: 10px;
}
.sub2{
display: none;
margin-left: 40px;
margin-bottom: 10px;
}
I would like to have only the toplevel tables displayed as default. This can be done with the css property "display: none".
I would like to show the subtables when the user clicks on the upper level table. Any existing jquery script for this ?

Here, I've created a jsfiddle with what you're asking for. You can create as many subtables as you could possibly want, this code will still work, and it's light on the fiddle.
HTML edit: I've surrounded the table you're cascading from, and the tables being cascaded from it in a div tag with the class ". clickable" <div class="clickable">...</div>
CSS edit: I've set all ".clickable" children with the same class (.clickable>.clickable{...}) to display:none;
JS edit: The code is activated when you click on the immediate child table element. It then gets that table's parent and finds its immediate child with the ".clickable" class and slideToggles it (you can set a different effect if you'd like, I assumed that this was the look you wanted)
HTML
<div class="clickable">
<table class='top'>
<tr class='greyrow'>
<td>TopLevel</td>
<td>A</td>
</tr>
</table>
<div class="clickable">
<table class='sub1'>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>B</td>
</tr>
</table>
<div class="clickable">
<table class='sub2'>
<tr class='greyrow'>
<td>SubLevel 2</td>
<td>C</td>
</tr>
</table>
<table class='sub2'>
<tr class='greyrow'>
<td>SubLevel 2</td>
<td>D</td>
</tr>
</table>
</div>
</div>
<div class="clickable">
<table class='sub1'>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>E</td>
</tr>
</table>
<div class="clickable">
<table class='sub2'>
<tr class='greyrow'>
<td>SubLevel 2</td>
<td>F</td>
</tr>
</table>
</div>
</div>
</div>
<div class="clickable">
<table class='top'>
<tr class='greyrow'>
<td>TopLevel</td>
<td>G</td>
</tr>
</table>
<div class="clickable">
<table class='sub1'>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>H</td>
</tr>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>I</td>
</tr>
</table>
</div>
</div>
CSS
table {
border-collapse: collapse;
border-width: 0px 0;
box-shadow: 3px 3px 4px #AAA;
}
.greyrow {
background-color: #c7c7c7;
font-size: 16px;
text-align: center;
color: black;
font-family:Verdana;
}
td {
width: 100px;
}
.top {
margin-bottom:10px;
}
.sub1 {
margin-left: 20px;
margin-bottom:10px;
}
.sub2 {
margin-left: 40px;
margin-bottom:10px;
}
.clickable {
cursor:pointer;
}
.clickable>.clickable {
display:none;
}
JS
$(".clickable").children("table").click(function () {
$(this).parent().children(".clickable").slideToggle();
});

I made a jsFiddle to do this. Is this what you are looking for?
HTML:
<table class='top' id='A'>
<tr class='greyrow'>
<td>TopLevel</td>
<td>A</td>
</tr>
</table>
<table class='sub1 sub_A' id='A1'>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>B</td>
</tr>
</table>
<table class='sub2 sub_A1'>
<tr class='greyrow'>
<td>SubLevel 2</td>
<td>C</td>
</tr>
</table>
<table class='sub2 sub_A1'>
<tr class='greyrow'>
<td>SubLevel 2</td>
<td>D</td></tr>
</table>
<table class='sub1 sub_A' id='A2'>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>E</td>
</tr>
</table>
<table class='sub2 sub_A2'>
<tr class='greyrow'>
<td>SubLevel 2</td>
<td>F</td>
</tr>
</table>
<table class='top' id='G'>
<tr class='greyrow'>
<td>TopLevel</td>
<td>G</td>
</tr>
</table>
<table class='sub1 sub_G'>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>H</td>
</tr>
<tr class='greyrow'>
<td>SubLevel 1</td>
<td>I</td>
</tr>
</table>
CSS:
table {
border-collapse: collapse;
border-width: 0px 0;
box-shadow: 3px 3px 4px #AAA;
}
.greyrow{
background-color: #c7c7c7;
font-size: 16px;
text-align: center;
color: black;
font-family: Verdana;
}
td{
width: 100px;
}
.top{
margin-bottom: 10px;
}
.sub1{
display: none;
margin-left: 20px;
margin-bottom: 10px;
width: 200px;
}
.sub2{
display: none;
margin-left: 40px;
margin-bottom: 10px;
width: 200px;
}
JQuery:
$(document).ready(function() {
var Clicks = [];
function click(id, numClicks) {
this.id = id;
this.numClicks = numClicks;
}
$(".top").click(function() {
var access = -1;
for (var c=0;c<Clicks.length;c++) {
if (Clicks[c].id === this.id) {
Clicks[c].numClicks += 1;
access = c;
c = Clicks.length;
}
}
if (access === -1) {
access = Clicks.length;
Clicks.push(new click(this.id, 1));
}
if (Clicks[access].numClicks % 2 !== 0) {
$((".sub_"+(this.id))).css('display', 'block');
} else {
$((".sub_"+(this.id)+'1')).css("display", "none");
$((".sub_"+(this.id))).css("display", "none");
}
});
$(".sub1").click(function() {
id = this.id;
var access = -1;
for (var c=0;c<Clicks.length;c++) {
if (Clicks[c].id === id) {
Clicks[c].numClicks += 1;
access = c;
c = Clicks.length;
}
}
if (access === -1) {
access = Clicks.length;
Clicks.push(new click(this.id, 1));
}
if (Clicks[access].numClicks % 2 !== 0) {
$((".sub_"+(id))).css('display', 'block');
} else {
$((".sub_"+(id))).css("display", "none");
}
});
});