問題描述
以下面的代碼為例:
<ul>
<li>Hello World</li>
<li>Hello World</li>
<li>Hello World</li>
<li>Hello World</li>
</ul>
是否有可能，使用 :nth-child() 或其他方式，準(zhǔn)確選擇總元素的 一半?代碼應(yīng)該在上面的實例中選擇第一個/最后一個 兩個 lis，然后如果我將 lis 的數(shù)量增加到六個，它將選擇第一個/最后一個三個.
Is it possible, using :nth-child() or otherwise, to select exactly half of the total elements? The code should select the first/last two lis in the above instance, then if I were to increase the number of lis to six, it would select the first/last three.
我覺得我將不得不使用 JavaScript...
I feel I'm going to have to use JavaScript...
推薦答案
在純 CSS 中接近的唯一方法是在任一 nth-child(odd) 或 nth-child(even).如果你想要準(zhǔn)確的后半部分(而不是奇數(shù)或偶數(shù))，那么你必須使用 JavaScript/jQuery.
The only way you'd be able to get anywhere near to that in pure CSS is to do a selector on either nth-child(odd) or nth-child(even). If you want exactly the last half (and not either odd or even), then you'd have to use JavaScript/jQuery.
使用 jQuery，您可以使用:
Using jQuery, you could get them using:
var yourList = $("ul li");
yourList = yourList.slice(0, Math.floor(yourList.length/2));
這篇關(guān)于用 :nth-child 選擇一半的元素?的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！