Online HTML Editor

<!DOCTYPE html> <html> <style> body { color: #000; background: lightblue; height: 100vh; text-align: center; } table { margin: 2rem auto; } .show { font-size: 1.2rem; } .btn { background: #db133a; border: none; height: 2rem; border-radius: 2px; width: 40%; display: block; color: #fff; outline: none; cursor: pointer; margin: 1rem auto; } .show { font-size: 1.2rem; } </style> <body> <h1>DOM Table rows Collection Demo</h1> <table border="2"> <thead> <tr> <th>Name</th> <th>Roll No.</th> </tr> <thead> <tbody> <tr> <td>John</td> <td>071717</td> </tr> <tr> <td>Jane</td> <td>031717</td> </tr> </tbody> </table> <button onclick="get()" class="btn">Get Number of Rows</button> <div class="show"></div> <script> function get() { var table = document.querySelector('table'); document.querySelector('.show').innerHTML = 'Number of rows : ' + table.rows.length; } </script> </body> </html>