Develop Reference

Copy some <tr> in html by js

I'm need to copy some tr with inputs when onclick event is triggered, by clean JavaScript, not jQuery or something else, and generate ids for inputs. I attached my html. I'm new in js, whole what I found its copy one element. I'm be gradfull for any help.
<tr id='needToCopy'>
<tr style='height:16.5pt'>
<td></td>
<td colspan="" class="s4">
Label
</td>
</tr>
<tr style='height:18pt'>
<td></td>
<td colspan="3" class="s17">
Label1
</td>
<td class="s6">
<input id="firstID"/>
</td>
</tr>
<tr style='height:60.0pt'>
<td></td>
<td class="s15" colspan="3">
label2
</td>
<td class="s14">
<input id="secondID"/>
</td>
</tr>
<tr style='height:18.0pt'>
<td></td>
<td class="s15" colspan="3">
label3
</td>
<td class="s14">
<input id=thirdId"/>
</td>
</tr>
</tr>
<button onclick="copy()">Press Me</button>

If you are looking to copy the entire contents of the table, you can do it with a small bit of javascript. As mentioned in the comments, you can't have a table row inside a table row, so I'm not sure if you wanted your labels as table tds? For demo purposes I changed the surround <tr> to <table> tags. You can see the 'copy' functionality working in the snippet. I also added an id to your button.
EDIT: 2nd version is probably closer to what you're looking for (layout wise)
document.getElementById('copybtn').addEventListener('click', copybtn, false);
function copy() {
var html = $('#needToCopy').html();
$('#needToCopy tr:last').after("<tr>" + html + "</tr>");
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.0/jquery.min.js"></script>
<!--<table id='needToCopy'>
<tr style='height:16.5pt'>
<td></td>
<td colspan="" class="s4">
Label
</td>
</tr>
<tr style='height:18pt'>
<td></td>
<td colspan="3" class="s17">
Label1
</td>
<td class="s6">
<input id="firstID" />
</td>
</tr>
<tr style='height:60.0pt'>
<td></td>
<td class="s15" colspan="3">
label2
</td>
<td class="s14">
<input id="secondID" />
</td>
</tr>
<tr style='height:18.0pt'>
<td></td>
<td class="s15" colspan="3">
label3
</td>
<td class="s14">
<input id="thirdId" />
</td>
</tr>
</table>-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.0/jquery.min.js"></script>
<h2>Labels</h2>
<table id='needToCopy'>
<tr style='height:18pt'>
<td>Label 1</td>
<td>Label 2</td>
<td>Label 3</td>
</tr>
<tr style='height:60.0pt'>
<td class="s6">
<input id="firstID">
</td>
<td class="s15">
<input id="secondID" />
</td>
<td class="s14">
<input id="thirdId" />
</td>
</tr>
</table>
<button id="copybtn" onclick="copy()">Press Me</button>

cloneNode if you want to make copy of same node in html.
var div = document.getElementById('div_id'),
clone = div.cloneNode(true); // true means clone all childNodes and all event handlers
clone.id = "some_id";
document.body.appendChild(clone);

It's quite simple if you want to copy a element inside
just use this code:
$("#IDTag").clone();
if you wish to prepend or append it, you can do that too by using:
$('#td').prependTo('#IDTag');
Be sure to give a ID to your element before you expect the results!

Adding Image on html table dynamically using JQuery

I am trying to adding image on html table dynamically using JQuery, but I am confusing how to find out a table 2,3..etc tr with in first td to add image.
My table structure has no id or class how to find, but before table have some text as below.
<table width="100%" border="0" cellspacing="1" cellpadding="5">
<tbody>
<tr valign="top">
<td colspan="2"><b>Order Details:</b><br> <br>
<table width="100%" bgcolor="#EEEEEE">
<tbody>
<tr>
<td>
<b>Code</b>
</td>
<td>
<b>SKU</b>
</td>
<td>
<b>Quantity</b>
</td>
<td>
<b>Price</b>
</td>
<td>
<b>Grand Total</b>
</td>
</tr>
<tr>
<td>10172</td>
<td>Product 1<br></td>
<td>5</td>
<td>
₹ 50.00
</td>
<td>
₹ 250.00
</td>
</tr>
<tr>
<td>10165</td>
<td>Product 2<br></td>
<td>5</td>
<td>
₹ 50.00
</td>
<td>₹ 250.00
</td>
</tr>
<tr>
<td colspan="5"> </td>
</tr>
<tr>
<td colspan="3"> </td>
<td align="right"> Subtotal: </td>
<td>₹ 250.00</td>
</tr>
<tr>
<td colspan="3"> </td>
<td align="right"> Tax: </td>
<td>₹ 0.00</td>
</tr>
<tr>
<td colspan="3"> </td>
<td align="right"> Shipping Cost: </td>
<td>₹ 0.00</td>
</tr>
<tr>
<td colspan="3"> </td>
<td align="right"> Grand Total: </td>
<td>₹ 250.00</td>
</tr>
</tbody>
</table>
<br>
</td>
</tr>
</tbody></table>
How to Add product Image before of the SKU.
Any help plz..?

As you don't have a thead or even use th for the headers, you'll have to skip the first row, you can use ">" to specify the direct hierarchy, eg:
$("table>tbody>tr>td>table>tbody>tr:not(:first-child)").each(function() {
var codecell = $(this).find("td:eq(0)");
var img = "/pathtoimage/" + codecell.text() + ".jpg"
codecell.after("<td><img src='" + img + '/></td>");
});
Updated: Fixed typo for ("td:eq(0)") vs ("td").eq(0) vs ("td")[0]

Find the sibling td element with jquery

I have a table that looks like this:
<table>
<tr>
<td class='class1' id='id1'></td>
<td class='class2' id='id2'></td>
<td class='class3' id='id3'></td>
<td class='class4' id='id4'><button id='editButton'></button></td>
</tr>
<tr>
<td class='class1' id='id1'></td>
<td class='class2' id='id2'></td>
<td class='class3' id='id3'></td>
<td class='class4' id='id4'><button id='editButton'></button></td>
</tr>
</table>
The code below shows me id4:
$("#editButton").on("click", function(){
alert($(this).parent().attr("id"));
});
Now I need to reach id3 which is the closest one. The functions .next('class3') and .closest('class3') do not help me or i am using them in a wrong way. Please help me

1st : id must be unique
so your code should like
<table>
<tr>
<td class='class1' id='id1'></td>
<td class='class2' id='id2'></td>
<td class='class3' id='id3'></td>
<td class='class4' id='id4'><button class="editButton"></button></td>
</tr>
<tr>
<td class='class1' id='id5'></td>
<td class='class2' id='id6'></td>
<td class='class3' id='id7'></td>
<td class='class4' id='id8'><button class="editButton"></button></td>
</tr>
</table>
and in js
$(".editButton").on("click", function(){
alert($(this).closest('tr').find('td:nth-child(3)').attr("id"));
});

compare two html tables data line by line and highlight using jquery

I have created a GSP page with two dynamic table with data and now i have to compare the data (inner html) and if any difference then highlight in table 2.
how to do it on clicking button using JS/jquery on clientside?
Table 1 is -
<table class="table loadTable" id ="table1">
<thead>
<tr bgcolor="#f0f0f0">
<td nowrap=""><b>COLUMN_NAME</b></td>
<td nowrap=""><b>DATA_TYPE</b></td>
<td nowrap=""><b>IS_NULLABLE</b></td>
<td nowrap=""><b>CHARACTER_MAXIMUM_LENGTH</b></td>
<td nowrap=""><b>NUMERIC_PRECISION</b></td>
<td nowrap=""><b>COLUMN_KEY</b></td>
</tr>
</thead>
<tbody>
<tr>
<td nowrap="">CountryCode </td>
<td nowrap="">int </td>
<td nowrap="">YES </td>
<td nowrap="">NULL </td>
<td nowrap="">10 </td>
</tr>
<tr>
<td nowrap="">Number </td>
<td nowrap="">varchar </td>
<td nowrap="">NO </td>
<td nowrap="">20 </td>
<td nowrap="">NULL </td>
<td nowrap="">PRI </td>
</tr><tr>
<td nowrap="">Type </td>
<td nowrap="">tinyint </td>
<td nowrap="">NO </td>
<td nowrap="">NULL </td>
<td nowrap="">3 </td>
<td nowrap="">PRI </td>
</tr>
<tr>
<td nowrap="">Date </td>
<td nowrap="">smalldatetime </td>
<td nowrap="">NO </td>
<td nowrap="">NULL </td>
<td nowrap="">NULL </td>
</tr>
</tbody>
table 2 is -
<table class="table loadTable" id ="table2">
<thead>
<tr bgcolor="#f0f0f0">
<td nowrap=""><b>COLUMN_NAME</b></td>
<td nowrap=""><b>DATA_TYPE</b></td>
<td nowrap=""><b>IS_NULLABLE</b></td>
<td nowrap=""><b>CHARACTER_MAXIMUM_LENGTH</b></td>
<td nowrap=""><b>NUMERIC_PRECISION</b></td>
<td nowrap=""><b>COLUMN_KEY</b></td>
</tr>
</thead>
<tbody>
<tr>
<td nowrap="">CountryCode</td>
<td nowrap="">int</td>
<td nowrap="">NO</td>
<td nowrap="">NULL</td>
<td nowrap="">10</td>
<td nowrap=""></td>
</tr>
<tr>
<td nowrap="">PhoneNumber</td>
<td nowrap="">varchar</td>
<td nowrap="">NO</td>
<td nowrap="">20</td>
<td nowrap="">NULL</td>
<td nowrap="">PRI</td>
</tr>
<tr>
<td nowrap="">Type</td>
<td nowrap="">tinyint</td>
<td nowrap="">NO</td>
<td nowrap="">NULL</td>
<td nowrap="">3</td>
<td nowrap="">PRI</td>
</tr>
<tr>
<td nowrap="">EffectiveDate</td>
<td nowrap="">datetime</td>
<td nowrap="">NO</td>
<td nowrap="">NULL</td>
<td nowrap="">NULL</td>
<td nowrap=""></td>
</tr>
</tbody>
</table>
if we click on following button then table 2 should get highlighted with any non matching data with table2.
<div style="align:right"><input type="submit" value="Compare IVR & TNS" /></div>

I wrote a quick function that should work as long as the number of rows is always the same and the user can't remove a row. in which case you should add id's to the rows and compare the rows by id or key.
function compareTables(t1, t2){
var t2rows = t2.find('tbody > tr');
t1.find('tbody > tr').each(function(index){
var t1row = $(this);
var t2row = $(t2rows[index]);
var t2tds = t2row.find('td');
t1row.find('td').each(function(index){
if($(this).text().trim() != $(t2tds[index]).text().trim() ){
console.log('difference: table1:('+$(this).text()+') table2:('+$(t2tds[index]).text()+')');
//set row in error
return;
}
});
});
}

GreaseMonkey editing Page

How can I change a page with this html code :
<tr>
<td nowrap title="7884">Ontem foi dia de</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">6,0</td></tr>
<tr>
to this one using greasemonkey :
<tr>
<td title="7884" nowrap="nowrap">ontem foi dia de</td>
<td> </td>
<td title="aprovadissimo" align="center" bgcolor="#ff8888">A</td>
<td title="Treze" align="center" bgcolor="#88ff88">13</td>
<td> </td>
<td bgcolor="#88ff88">Aprovado</td>
<td align="right">6,0</td></tr>
<tr>

have a look at http://diveintogreasemonkey.org/ and see about writing GreaseMoney Scripts

How are you determining which table cells should have which certain values in them? What are the rules you're going to have for this?