I used to think that I could only use jquery's data() to get
Haha I'm too weak
<!DOCTYPE html>
<html>
<head>
<title>dataset</title>
<meta charset="utf-8">
</head>
<body>
<div id='div' data-index='demo'>
</div>
</body>
<script type="text/javascript">
var a = ('div');
(a)
()//demo
</script>
</html>
You can get the data attributes of the DOM element by directly using dataset
OK, you can also use js to getAttribute()
('data-index')
==>"demo"
The above article js to obtain the data attribute implementation method of html5 is all the content I have shared with you. I hope you can give you a reference and I hope you can support me more.