Let’s say the following is our table −
<table> <tr id='StudentDetails'> <th>StudentName</th> <th>StudentCountryName</th> </tr> <tr id='FirstRow'> <td>JohnDoe</td> <td>UK</td> </tr> <tr id='SecondRow'> <td>DavidMiller</td> <td>US</td> </tr> </table>
To get id from tr tag and display it in a new td, use document.querySelectorAll(table tr).
Example
Following is the code −
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<style>
td,
th,
table {
border: 1px solid black;
margin-left: 10px;
margin-top: 10px;
}
</style>
<body>
<table>
<tr id='StudentDetails'>
<th>StudentName</th>
<th>StudentCountryName</th>
</tr>
<tr id='FirstRow'>
<td>JohnDoe</td>
<td>UK</td>
</tr>
<tr id='SecondRow'>
<td>DavidMiller</td>
<td>US</td>
</tr>
</table>
</body>
<script>
document.querySelectorAll('table tr').forEach(trObj => {
var tableValue = trObj.insertCell(0);
tableValue.textContent = trObj.id;
});
</script>
</html>To run the above program, save the file name “anyName.html(index.html)”. Right click on the file and select the option “Open with Live Server” in VS Code editor.
Output
This will produce the following output on console −
