data-url html
<a id = "test" data-url="https://www.google.com/">
<script>
var a = document.getelementbyid('test');
var url = a.data('url');
</script>
lpduyplus
<a id = "test" data-url="https://www.google.com/">
<script>
var a = document.getelementbyid('test');
var url = a.data('url');
</script>