Tryit Editor v2.9

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

<table id="myTable">
</table>

<p>Click the button to create a TR and a TD element.</p>

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

<script>
function myFunction() {
    var x = document.createElement("TR");
    x.setAttribute("id", "myTr");
    document.getElementById("myTable").appendChild(x);

    var y = document.createElement("TD");
    var t = document.createTextNode("new cell");
    y.appendChild(t);
    document.getElementById("myTr").appendChild(y);
}
</script>

</body>
</html>