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JavaScript getting an elements class without any libraries

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隐瞒了意图╮
隐瞒了意图╮ 2020-12-10 09:53

I would like to get the value of the class attribute for an element using JavaScript. However in this particular situation I don\'t have the luxury of libr

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  • 迷失自我
    2020-12-10 10:36

    className?

    Element.className

    <html>
<body id="myid" class="mystyle">

<script>
var x=document.getElementsByTagName('body')[0];
document.write("Body CSS class: " + x.className);
document.write("<br>");
document.write("An alternate way: ");
document.write(document.getElementById('myid').className);
</script>

</body>
</html>
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  • 我寻月下人不归
    2020-12-10 10:43

    This line that you posted should work:

    var colClass = el.getAttribute('class');

    Could you post what error you get in the browser? Make sure that el is not null.

    If you won't get that one to work, the attribute of the object is className, not class:

    var colClass = el.className;
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  • 一向
    2020-12-10 10:45

    Remember:

    If you get an error and className does not work this can be due to your element being a jQuery object.

    In the picture above you see that I canot use className on a jQuery object

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  • 情歌与酒
    2020-12-10 10:59

    Maybe you should try this

    var colClass = el.className
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