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<html><head><style>table, td { border: 1px solid black;}</style></head><body><p>Click the button to alert the innerHTML of the first tbody element (index 0) in the table.</p><table id="myTable"> <tbody> <tr> <td>cell 1</td> <td>cell 2</td> </tr> </tbody> <tbody> <tr> <td>cell 3</td> <td>cell 4</td> </tr> </tbody></table><br> <button onclick="myFunction()">Try it</button><script>function myFunction() { alert(document.getElementById("myTable").tBodies[0].innerHTML);}</script></body></html>