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<!DOCTYPE html>
<html>
<head>
<style>
table, th, td {
    border: 1px solid black;
}
</style>
</head>
<body>

<h3>A demonstration of how to access a TR element</h3>

<table>
  <tr id="myRow">
    <td>First cell</td>
    <td>Second cell</td>
    <td>Third cell</td>
  </tr>
</table>

<p>Click the button to delete the first cell from the table row.</p>

<button onclick="myFunction()">Try it</button>

<script>
function myFunction() {
    var row = document.getElementById("myRow");
    row.deleteCell(0);
}
</script>

</body>
</html>