Use the document.anchor property in JavaScript to get the number of anchors (<a>) in a document with the name attribute.
Example
You can try to run the following code to implement document.anchors property in JavaScript −
<!DOCTYPE html>
<html>
<head>
<title>JavaScript Example</title>
</head>
<body>
<p>
<a href="/java/index.htm">Java</a><br>
<a href="/php/index.htm">PHP</a><br>
<a name="Ruby Tutorial">Ruby</a><br>
<a name="WordPress Tutorial">WordPress</a>
</p>
<script>
var num1 = document.links.length;
var num2 = document.anchors.length;
document.write("How many links? "+num1);
document.write("<br>How many anchors? "+num2);
</script>
</body>
</html>