xxxxxxxxxx<html lang="en"><head><meta charset="utf-8"><title>jQuery Get Number of Rows in a Table</title><script src="https://code.jquery.com/jquery-3.5.1.min.js"></script><script> $(document).ready(function(){ $("button").click(function(){ var rowCount = $("#myTable tr").length; alert(rowCount); // Outputs: 4 }); });</script></head><body> <table id="myTable" border="1" width="140"> <tr> <th>ID</th> <th>Name</th> <th>Age</th> </tr> <tr> <td>1</td> <td>John</td> <td>25</td> </tr> <tr> <td>2</td> <td>Peter</td> <td>18</td> </tr> <tr> <td>3</td> <td>Harry</td> <td>14</td> </tr> </table> <br> <button type="button">Get Number of Rows</button></body> </html>