css - CSS3 odd and even only visible rows

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css - CSS3 odd and even only visible rows

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

css - CSS3 odd and even only visible rows

I'm trying to stripe the colours of alternating elements. But I want the row colors to alternate only the visible rows. If you have a look at the below here is my attempt at trying to get it working.

http://jsfiddle.net/kuwFp/3/

<!DOCTYPE html>
<html>
<head>
<style>
p:not(.hide):nth-child(odd)
{
background:#ff0000;
}
p:not(.hide):nth-child(even)
{
background:#0000ff;
}
.hide { display:none; }
</style>
</head>
<body>

<p>The first paragraph.</p>
<p class="hide">The second paragraph.</p>
<p>The third paragraph.</p>

</body>
</html>

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1 Answer

深蓝 · Answer 1 · 2021-10-23T21:27:36+0000

You can't do this with pure CSS because the :nth-child selector is calculated with respect to the element and :not does not filter element position in the DOM. You need to use JavaScript for a fully flexible solution.

It's still possible for you to do this inflexibly by making elements after .hide with :nth-child alternate the color they should be:

.hide + p:nth-child(odd) {
    background: #0000ff;    
}

You can continue to add similar rules for more and more combinations of sibling .hide and p, but this is very inflexible.

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