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<html><head><script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script><script>$(document).ready(function(){ $("p:nth-child(odd)").css("background-color", "yellow"); $("p:nth-child(even)").css("background-color", "pink"); });</script></head><body><p>The first p element in body, and the first child in body (odd).</p><p>The last p element in body, and the last child in body (even).</p><div style="border:1px solid;"> <span>This is a span element, the first child in div.</span> <p>The first p element in div, and the second child in div (even).</p> <p>The second p element in div, and the third child in div (odd).</p> <p>The third p element in div, and the fourth child in div (even).</p> <p>The last p element in div, and the last child in div (odd).</p></div><br><div style="border:1px solid;"> <p>The first p element in another div, and the first child in another div (odd).</p> <p>The second p element in another div, and the second child in another div (odd).</p> <p>The third p element in another div, and the third child in another div (odd).</p> <p>The last p element in another div, and the last child in another div (odd).</p></div></body></html>