Get your own website Result Size: 625 x 565
x
 
<!DOCTYPE html>
<html>
<head>
<style>
table, th, td {
  border: 1px solid black;
}
</style>
</head>
<body>
<h3>A demonstration of how to access a TH element</h3>
<table>
 <tr>
   <th id="myTh">Name</th>
 </tr>
 <tr>
   <td>John</td>
 </tr>
</table>
<p>Click the button to change the text of the TH element.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
  var x = document.getElementById("myTh");
  x.innerHTML = "New Table Header";
}
</script>
</body>
</html>