Rotate a table 90 degrees - javascript

I have a table that looks something like this:
<table><tbody>
<tr><td>a</td><td>1</td></tr>
<tr><td>b</td><td>2</td></tr>
<tr><td>c</td><td>3</td></tr>
<tr><td>d</td><td>4</td></tr>
<tr><td>e</td><td>5</td></tr>
<tr><td>f</td><td>6</td></tr>
<tr><td>g</td><td>7</td></tr>
</tbody></table>
I need it to get to something like this:
<table><tbody>
<tr>
<td>a</td><td>b</td><td>c</td><td>d</td>
<td>e</td><td>f</td><td>g</td>
</tr>
<tr>
<td>1</td><td>2</td><td>3</td><td>4</td>
<td>5</td><td>6</td><td>7</td>
</tr>
</tbody></table>
example
I'm thinking something like this should work, but I'm kinda lost, how would I go about this:
Here's what I started
I'm open to Javascript, jQuery or even CSS for this.


This will swap the rows and columns of any size tbody,
as long as rows all have the same number of cells.
<!doctype html>
<html lang= "en">
<head>
<meta charset= "utf-8">
<title> Small Test Page</title>
</head>
<body>
<script>
function tableSwap(){
var t= document.getElementsByTagName('tbody')[0],
r= t.getElementsByTagName('tr'),
cols= r.length, rows= r[0].getElementsByTagName('td').length,
cell, next, tem, i= 0, tbod= document.createElement('tbody');
while(i<rows){
cell= 0;
tem= document.createElement('tr');
while(cell<cols){
next= r[cell++].getElementsByTagName('td')[0];
tem.appendChild(next);
}
tbod.appendChild(tem);
++i;
}
t.parentNode.replaceChild(tbod, t);
}
</script>
<h1> Small Test Page</h1>
<p> <button type= "button" id= "tableSwapBtn" onclick= "tableSwap()">
Swap rows and columns</button> </p>
<table style="width:300px;border:1px" rules="all">
<tbody>
<tr> <td> a</td> <td> 1</td> </tr>
<tr> <td> b</td> <td> 2</td> </tr>
<tr> <td> c</td> <td> 3</td> </tr>
<tr> <td> d</td> <td> 4</td> </tr>
<tr> <td> e</td> <td> 5</td> </tr>
<tr> <td> f</td> <td> 6</td> </tr>
<tr> <td> g</td> <td> 7</td> </tr>
</tbody>
</table>
</body>
</html>


Here is my solution:
http://jsfiddle.net/mtrwk/19/
$('table').each(function() {
$(this).after("<table><tbody></tbody></table>");
var newTable = $(this).next("table").children("tbody");
$(this).children("tbody").children("tr").each(function(rIndex, rItem){
$(this).children("td").each(function(dIndex, dItem){
if(newTable.children("tr:eq("+dIndex+")").html() == null){
newTable.append("<tr></tr>");
}
newTable.children("tr:eq("+dIndex+")").append($(this)[0].outerHTML);
});
});
});


I have a jquery class that accomplish this task. This class supports rowspan and colspan in the table as well.
Usage is really simple:
$('#newtable').tableflip($('#sourcetable'));
Here is the code of the class and sample usage: https://jsfiddle.net/adyhu78/9b1q4ys0/

Related

Get all tr in table between tr with table-primary class and push in array

At the click of the button #create-arrays I need to create multiple arrays. Each array will contain the set of tr (not .table-primary) present between the two tr (previous and next) with class table primary. this set of tr will be called context. Using jquery, how can I identify any such context and place it in an array? Thanks to everyone who will help.
HTML part (for testing):
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
</head>
<body>
<table class="table table-sm">
<thead>
</thead>
<tbody>
<tr class="table-primary">
<td colspan="2">Group 1</td>
</tr>
<tr>
<td>Name: Jonh</td>
<td>Surname: Doe</td>
</tr>
<tr>
<td>Name: Mark</td>
<td>Surname: Lon</td>
</tr>
<tr class="table-primary">
<td colspan="2">Group 2</td>
</tr>
<tr>
<td>Name: Will</td>
<td>Surname: Man</td>
</tr>
<tr>
<td>Name: Ben</td>
<td>Surname: Harper</td>
</tr>
<tr>
<td>Name: Mitch</td>
<td>Surname: Collins</td>
</tr>
<tr class="table-primary">
<td colspan="2">Group 3</td>
</tr>
<tr>
<td>Name: Serena</td>
<td>Surname: Mellin</td>
</tr>
<tr class="table-primary">
<td colspan="2">Group 4</td>
</tr>
<tr>
<td>Name: Nickolas</td>
<td>Surname: Malinof</td>
</tr>
<tr>
<td>Name: David</td>
<td>Surname: Benner</td>
</tr>
<tr>
<td>Name: Lenny</td>
<td>Surname: Doe</td>
</tr>
<tr>
<td>Name: Micheal</td>
<td>Surname: Pitzford</td>
</tr>
<tr>
<td>Name: Melania</td>
<td>Surname: Bebant</td>
</tr>
</tbody>
</table>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
</body>
</html>
the jquery script that i use to get all the tr inside tbody.
$('#create-arrays').on('click', function(){
var context = [];
var a = $('#file_table_available tbody tr');
console.log(a);
for (let i = 0; i < a.length; i++) {
const element = a[i];
}
})

You're off to a good start looping over all rows in the table.
You could check each row (element in your snippet) for the existance of the table-primary class. If the row has this class, you know you have to create a new group.
Here's a vanilla javascript example. It outputs an array of groups. Each group contains 1 or more rows that belong together.
const rows = document.querySelectorAll("tr");
const groups = [];
let group = null;
for (const row of rows) {
if (row.classList.contains("table-primary")) {
group = [];
groups.push(group);
} else {
group.push(row);
}
}
console.log(groups);
<table class="table table-sm">
<thead>
</thead>
<tbody>
<tr class="table-primary">
<td colspan="2">Group 1</td>
</tr>
<tr>
<td>Name: Jonh</td>
<td>Surname: Doe</td>
</tr>
<tr>
<td>Name: Mark</td>
<td>Surname: Lon</td>
</tr>
<tr class="table-primary">
<td colspan="2">Group 2</td>
</tr>
<tr>
<td>Name: Will</td>
<td>Surname: Man</td>
</tr>
<tr>
<td>Name: Ben</td>
<td>Surname: Harper</td>
</tr>
<tr>
<td>Name: Mitch</td>
<td>Surname: Collins</td>
</tr>
<tr class="table-primary">
<td colspan="2">Group 3</td>
</tr>
<tr>
<td>Name: Serena</td>
<td>Surname: Mellin</td>
</tr>
<tr class="table-primary">
<td colspan="2">Group 4</td>
</tr>
<tr>
<td>Name: Nickolas</td>
<td>Surname: Malinof</td>
</tr>
<tr>
<td>Name: David</td>
<td>Surname: Benner</td>
</tr>
<tr>
<td>Name: Lenny</td>
<td>Surname: Doe</td>
</tr>
<tr>
<td>Name: Micheal</td>
<td>Surname: Pitzford</td>
</tr>
<tr>
<td>Name: Melania</td>
<td>Surname: Bebant</td>
</tr>
</tbody>
</table>

I need to hide table rows depending on their content

I have a simple table of domains and subdomains.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>My Table</title>
</head>
<body>
<table>
<thead>
<th>doamin_name</th>
<th>subdoamin_name</th>
</thead>
<tr>
<td>bing.com</td>
<td></td>
</tr>
<tr>
<td>google.com</td>
<td></td>
</tr>
<tr>
<td>google.com</td>
<td>images.google.com</td>
</tr>
<tr>
<td>google.com</td>
<td>mail.google.com</td>
</tr>
<tr>
<td>google.com</td>
<td>maps.google.com</td>
</tr>
<tr>
<td>yahoo.com</td>
<td></td>
</tr>
<tr>
<td>yahoo.com</td>
<td>stores.yahoo.com</td>
</tr>
<tr>
<td>yahoo.com</td>
<td>tw.news.yahoo.com</td>
</tr>
<tr>
<td>yahoo.com</td>
<td>view.yahoo.com</td>
</tr>
</table>
</body>
</html>
I need to show/hide subdomains when I click on domain row.
I tried jQuery slideToggle
$(document).ready(function(){
$(document).on("click", "tbody tr:eq(1)", function(){
$("tbody tr:nth-child(1n+3)").slideToggle(1000);
});
});
It works fine when I specify row numbers manually, but I need to find them automatically for every domain/subdomains, because table will grow in size.
So I need to check subdomain_name textContent:
If it's empty - this is a domain. Add EventListener to it, so on click it will show/hide it's subdomains.
If it's not empty - check domain_name textContect and add to rows that need to be hidden.

You can add class for the <td> of domain name using following css selector, then loop through the rows and using .closest().
ThefirstIndex is to determine the row without subdomain value
$(document).ready(function(){
$('tr>td:nth-child(1)').addClass('domainTd');
$(document).on("click", ".domainTd", function(){
var domainName= $(this).text();
var firstIndex=true;
$('tr>td:nth-child(1)').each(function(index){
if($(this).text()===domainName){
if(firstIndex){
firstIndex=false;
}else{
$(this).closest('tr').slideToggle()
}
}
})
});
});
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>My Table</title>
</head>
<body>
<table>
<thead>
<th>doamin_name</th>
<th>subdoamin_name</th>
</thead>
<tr>
<td>bing.com</td>
<td></td>
</tr>
<tr>
<td>google.com</td>
<td></td>
</tr>
<tr>
<td>google.com</td>
<td>images.google.com</td>
</tr>
<tr>
<td>google.com</td>
<td>mail.google.com</td>
</tr>
<tr>
<td>google.com</td>
<td>maps.google.com</td>
</tr>
<tr>
<td>yahoo.com</td>
<td></td>
</tr>
<tr>
<td>yahoo.com</td>
<td>stores.yahoo.com</td>
</tr>
<tr>
<td>yahoo.com</td>
<td>tw.news.yahoo.com</td>
</tr>
<tr>
<td>yahoo.com</td>
<td>view.yahoo.com</td>
</tr>
</table>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="index.js"></script>
</body>
</html>

NodeList from .innerHTML to Array or String

I am trying to save cell entries of a randomly sorted HTML table to a variable in JavaScript. I am so far that I get a nodeliste of the first column at the click of a button. My question is, how can I convert this NodeListe into an array? I have tried different things like Array.prototype.slice.call (nl); inside the findOrder function (inside for declaration) but it does not seem to have been very successful, since the individual entries appear as an array instead of all the entries in one array.
Working code:
function randomSort()
{
var row = document.getElementById("sort").rows;
var rC = row.length;
var tableBody = document.getElementById("idforparentnode").parentNode;
for(i=0;i<rC;i++){
tableBody.insertBefore(row[Math.ceil(Math.random()*(rC-1))],row[i]);
}
}
function findOrder()
{
var orderlist = document.getElementsByClassName("order");
for (var i=0; i<orderlist.length; i++)
{
var nl = orderlist[i].innerHTML;
console.log(nl);
}
}
<!DOCTYPE html>
<html>
<title>Sort a HTML Table Randomly</title>
<body>
<p>Click the button to sort the table randomly:</p>
<p><button onclick="randomSort()">Shuffle Line 3-6</button></p>
<table border="1" id="myTable">
<thead>
<th style="display:none;"></th>
<th>Name</th>
<th>Current Exchange Rate</th>
</thead>
<tbody class="avoid-sort">
<tr>
<td class="order" style="display:none;">1</td>
<td>General Electric</td>
<td>19,57</td>
</tr>
<tr>
<td class="order" style="display:none;">2</td>
<td>Johnson & Johnson</td>
<td>119,14</td>
</tr>
</tbody>
<tbody id="sort">
<tr id="idforparentnode">
<td class="order" style="display:none;">3</td>
<td>Microsoft</td>
<td>65,92</td>
</tr>
<tr>
<td class="order" style="display:none;">4</td>
<td>Verizon</td>
<td>40,82</td>
</tr>
<tr>
<td class="order" style="display:none;">5</td>
<td>American Express</td>
<td>77,21</td>
</tr>
<tr>
<td class="order" style="display:none;">6</td>
<td>WhatSoEver</td>
<td>12,34</td>
</tr>
</tbody>
<tbody class="avoid-sort">
<tr>
<td class="order" style="display:none;">7</td>
<td>Apple</td>
<td>133,90</td>
</tr>
<tr>
<td class="order" style="display:none;">8</td>
<td>Nintendo</td>
<td>43,53</td>
</tr>
<tr>
<td class="order" style="display:none;">9</td>
<td>WhatEver</td>
<td>999,99</td>
</tr>
</tbody>
</table>
<br>
<input type="button" value="Display Order (based on standard order)" onclick="findOrder()">
<br>
<p>Display order of rows: </p>
<p id="orderdisplay"></p>
</body>
</html>

orderlist is actually an HTMLCollection. You can convert NodeList or HTMLCollection to an Array using spread element
function randomSort()
{
var row = document.getElementById("sort").rows;
var rC = row.length;
var tableBody = document.getElementById("idforparentnode").parentNode;
for(i=0;i<rC;i++){
tableBody.insertBefore(row[Math.ceil(Math.random()*(rC-1))],row[i]);
}
}
function findOrder()
{
var orderlist = [...document.getElementsByClassName("order")];
console.log(Array.isArray(orderlist));
for (var i=0; i<orderlist.length; i++)
{
var nl = orderlist[i].innerHTML;
console.log(nl);
}
}
<!DOCTYPE html>
<html>
<title>Sort a HTML Table Randomly</title>
<body>
<p>Click the button to sort the table randomly:</p>
<p><button onclick="randomSort()">Shuffle Line 3-6</button></p>
<table border="1" id="myTable">
<thead>
<th style="display:none;"></th>
<th>Name</th>
<th>Current Exchange Rate</th>
</thead>
<tbody class="avoid-sort">
<tr>
<td class="order" style="display:none;">1</td>
<td>General Electric</td>
<td>19,57</td>
</tr>
<tr>
<td class="order" style="display:none;">2</td>
<td>Johnson & Johnson</td>
<td>119,14</td>
</tr>
</tbody>
<tbody id="sort">
<tr id="idforparentnode">
<td class="order" style="display:none;">3</td>
<td>Microsoft</td>
<td>65,92</td>
</tr>
<tr>
<td class="order" style="display:none;">4</td>
<td>Verizon</td>
<td>40,82</td>
</tr>
<tr>
<td class="order" style="display:none;">5</td>
<td>American Express</td>
<td>77,21</td>
</tr>
<tr>
<td class="order" style="display:none;">6</td>
<td>WhatSoEver</td>
<td>12,34</td>
</tr>
</tbody>
<tbody class="avoid-sort">
<tr>
<td class="order" style="display:none;">7</td>
<td>Apple</td>
<td>133,90</td>
</tr>
<tr>
<td class="order" style="display:none;">8</td>
<td>Nintendo</td>
<td>43,53</td>
</tr>
<tr>
<td class="order" style="display:none;">9</td>
<td>WhatEver</td>
<td>999,99</td>
</tr>
</tbody>
</table>
<br>
<input type="button" value="Display Order (based on standard order)" onclick="findOrder()">
<br>
<p>Display order of rows: </p>
<p id="orderdisplay"></p>
</body>
</html>

Jquery - copy a row from one table to another

I'm brand new to jquery and javascript and I'm trying to write a simple app that will, when I press a button, copy a row from one table to another and then delete the row from the first table. I have a DeleteRow function that works just fine, but I can't get my "DraftPlayer" function to copy the row. I've tried quite a few of the solutions I've found on the web, but I can't get the syntax just right. You'll see only the second row in the table has the DraftPlayer button as I work this out.
Here are the code snippets I think are critical:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
//<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
</head>
<body>
<div> </div>
<p>Welcome to Mike's Draft App! </p>
<table id="players">
<table border="1">
<tr>
<td width="36"> Rank </td>
<td width="141"> Player Name </td>
<td width="52">Position </td>
<td width="38">Team </td>
<td width="69"> Bye Week </td>
<td width="52"><input type="button" value="Delete" onClick="DeleteRow(this)"></td>
</tr>
<tr>
<td>1</td>
<td>Antonio Brown</td>
<td>WR</td>
<td>PIT</td>
<td>8</td>
<td><input type="button" value="Delete" onClick="DeleteRow(this)"></td>
<td width="103"> </td>
</tr>
<tr>
<td>2</td>
<td>Julio Jones</td>
<td>WR</td>
<td>ATL</td>
<td>11</td>
<td><input type="button" value="Delete" onClick="DeleteRow(this)"></td>
<td><input type="button" value="Draft" onClick="DraftPlayer(this)"></td>
</tr>
<table id="drafted">
<table border="1">
<tr>
<td width="36"> Rank </td>
<td width="141"> Player Name </td>
<td width="52">Position </td>
<td width="38">Team </td>
<td width="69"> Bye Week </td>
</tr>
</table>
<script>
function DeleteRow(o) {
var p=o.parentNode.parentNode;
p.parentNode.removeChild(p);
}
function DraftPlayer(o) {
var p=o.parentNode.parentNode;
copyTable = $('#drafted tbody');
cloneRow = p.clone();
copyTable.append(cloneRow);
p.parentNode.removeChild(p);
}
</script>
</body>
</html>
Thanks for any suggestions!

You are selecting $('#drafted tbody'); which is not present in DOM at all so you will get nothing. You need to add tbody to your table or you need to change the selector.
<table id="drafted">
<tbody>
<tr>
<th width="36"> Rank </th>
<th width="141"> Player Name </th>
<th width="52">Position </th>
<th width="38">Team </th>
<th width="69"> Bye Week </th>
</tr>
</tbody>
</table>
function DraftPlayer(o) {
var p = $(o).closest('tr');
copyTable = $('#drafted tbody');
cloneRow = p.clone();
copyTable.append(cloneRow)
p.remove();
}

function DeleteRow(o) {
var p=o.parentNode.parentNode;
p.parentNode.removeChild(p);
}
function DraftPlayer(o) {
var p=o.parentNode.parentNode;
copyTable = $('#drafted tbody');
cloneRow = p.innerHTML;
//alert(cloneRow )
copyTable.append("<tr>"+cloneRow+"</tr>");
p.parentNode.removeChild(p);
}
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
//<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
</head>
<body>
<div> </div>
<p>Welcome to Mike's Draft App! </p>
<table id="players">
<table border="1">
<tr>
<td width="36"> Rank </td>
<td width="141"> Player Name </td>
<td width="52">Position </td>
<td width="38">Team </td>
<td width="69"> Bye Week </td>
<td width="52"><input type="button" value="Delete" onClick="DeleteRow(this)"></td>
</tr>
<tr>
<td>1</td>
<td>Antonio Brown</td>
<td>WR</td>
<td>PIT</td>
<td>8</td>
<td><input type="button" value="Delete" onClick="DeleteRow(this)"></td>
<td width="103"> </td>
</tr>
<tr>
<td>2</td>
<td>Julio Jones</td>
<td>WR</td>
<td>ATL</td>
<td>11</td>
<td><input type="button" value="Delete" onClick="DeleteRow(this)"></td>
<td><input type="button" value="Draft" onClick="DraftPlayer(this)"></td>
</tr>
<table id="drafted" border="1">
<tr>
<td width="36"> Rank </td>
<td width="141"> Player Name </td>
<td width="52">Position </td>
<td width="38">Team </td>
<td width="69"> Bye Week </td>
</tr>
</table>
</body>
</html>
A lot of mistakes in your code. Go through my code ,I edited it, Works Fine

You need to convert the DOM Element to jquery object in order to use the clone() function.
The modified DraftPlayer() function is:
function DraftPlayer(o) {
var p=o.parentNode.parentNode;
copyTable = $('#drafted tbody');
cloneRow = $(p).clone();
copyTable.append(cloneRow);
p.parentNode.removeChild(p);
}
Suggestions:
There are some problem with your HTML also
Modify the table tag.
<table id="your_id" border="1">
<tbody>
-----------
-----------
</tbody>
</table>

jquery auto print the row number

i've a table with 10 row, is it possible to print the row number (from 1 to 9, the first row is NO&title, the second row should be 1) to the td with class "sno" based on the size of the table? here is the html:
<table width="100%" border="1">
<tr>
<td width="23%">No.</td>
<td width="77%">Title</td>
</tr>
<tr>
<td class="sno"> </td>
<td> </td>
</tr>
<tr>
<td class="sno"> </td>
<td> </td>
</tr>
<tr>
<td class="sno"> </td>
<td> </td>
</tr>
<tr>
<td class="sno"> </td>
<td> </td>
</tr>
<tr>
<td class="sno"> </td>
<td> </td>
</tr>
<tr>
<td class="sno"> </td>
<td> </td>
</tr>
<tr>
<td class="sno"> </td>
<td> </td>
</tr>
<tr>
<td class="sno"> </td>
<td> </td>
</tr>
<tr>
<td class="sno"> </td>
<td> </td>
</tr>
the result should be
<table width="100%" border="1">
<tr>
<td width="23%">No.</td>
<td width="77%">Title</td>
</tr>
<tr>
<td class="sno">1</td>
<td> </td>
</tr>
<tr>
<td class="sno">2</td>
<td> </td>
</tr>
<tr>
<td class="sno">3</td>
<td> </td>
</tr>
<tr>
<td class="sno">4</td>
<td> </td>
</tr>
<tr>
<td class="sno">5</td>
<td> </td>
</tr>
<tr>
<td class="sno">6</td>
<td> </td>
</tr>
<tr>
<td class="sno">7</td>
<td> </td>
</tr>
<tr>
<td class="sno">8</td>
<td> </td>
</tr>
<tr>
<td class="sno">9</td>
<td> </td>
</tr>
The question is not generate the table, it is print the right number to target

Try with the simpleone
$('table tbody tr').not(":first").each(function(idx){
$(this).children(":eq(0)").html(idx + 1);
});

Here is the jsfiddle example: http://jsfiddle.net/3BBEN/
$(document).ready(function(){
//use a special class name or id for the table
//using find I'm getting all tr elements in the table
//using not(':eq(0)') I'm ignoring the first tr element
//using each I'm iterating through the selected elements
$('table').find('tr').not(':eq(0)').each(function(i){
//using children('td:eq(0)') I'm getting the first td element inside the tr
$(this).children('td:eq(0)').addClass('sno').text(i+1);
});
});

Table row elements have a rowIndex property that is the zero–based sequence number for the table
section that they are in. So if you have a reference to a cell you can use:
var rowIndex = cell.parentNode.rowIndex;
If you have header rows in a table, you probably should put them in a thead table section, then
you can number the rows in tbody section easily, e.g.
<table>
<thead>
<tr>
<td>head<td>head
</tr>
</thead>
<tbody>
<tr>
<td class="sno"></td>
<td>...</td>
</tr>
<tr>
<td class="sno"></td>
<td>...</td>
</tr>
</tbody>
</table>
So now you can do something like:
window.onload = function() {
var table = document.getElementsByTagName('table')[0];
var rows = table.tBodies[0].rows;
for (var i=0, iLen=rows.length; i<iLen; i++) {
rows[i].cells[0].innerHTML = i + 1;
}
};
Of course you can get the rows some other way (e.g. class), but the above is independent of that.

Try this:
$(document).ready(function(){
$cells=$("table td.sno");
for(var i=0;i<$cells.length;i++)
{
// alert(i);
$cells.eq(i).text(i);
}
});
Check on fiddle http://jsfiddle.net/qcWec/1/

try this::
$(document).ready(function(){
var i=1;
$('.sno').each(function(){
$(this).text(i);
i++;
});
});

Categories