tryjsref_anchor_hreflang 在线代码实例

 <a id="w3s" hreflang="en-us" href="http:/">W3Cschool</a><br>

<script>
document.write("Return hreflang of link: ");
document.write(document.getElementById('w3s').hreflang);
document.write("<br><br>");
</script>

<a id="google" href="http://www.google.com/">Google</a><br>

<script>
document.getElementById('google').hreflang="no";
document.write("Set hreflang of link to: ");
document.write(document.getElementById('google').hreflang);
</script>