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How does JavaScript get the instance of data attribute in html5

黄舟
黄舟Original
2017-07-27 16:29:482318browse

I used to think that I could only use jquery's data() to get it

Haha, I'm too weak


<!DOCTYPE html>
<html>

<head>
    <title>dataset</title>
    <meta charset="utf-8">
</head>

<body>
    <p id=&#39;p&#39; data-index=&#39;demo&#39;>
    </p>
</body>
<script type="text/javascript">var a = document.getElementById(&#39;p&#39;);
console.log(a)
console.log(a.dataset.index)//demo</script>

</html>

You can directly use dataset to get the data attribute of the DOM element

Okay, you can also use the js method of getting attributes, getAttribute()


a.getAttribute(&#39;data-index&#39;)==>"demo"

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