To get the value of the hreflang attribute of a link in JavaScript, use the hreflang property.
Example
You can try to run the following code to get the value of the href attribute of a link.
<!DOCTYPE html>
<html>
<body>
<p><a id="anchorid" hreflang="en-us" href="https://www.qries.com/">Qries</a></p>
<script>
var myHrefLang = document.getElementById("anchorid").hreflang;
document.write("Value of hreflang attribute: "+myHrefLang);
</script>
</body>
</html>