<!DOCTYPE html>
<html>
<head>
<script>
function TotalElements() {
document.getElementById("pid").innerHTML = document.anchors.length;
}
</script>
</head>
<body>
<a name="a" href="#">HTML</a><br />
<a name="b" href="#">CSS</a><br />
<a name="c" href="#">JavaScript</a><br />
<a name="d" href="#">PHP</a><br />
<br />
<input type="button" onclick="TotalElements()" value="Total Elements">
<p id="pid"></p>
</body>
</html>