問題描述

我正在為圖片庫制作一個簡單的 HTML.圖庫的每一行可以有 2、3 或 4 張圖像.(在一個 2 圖像行中，每個圖像元素被命名為 type-2，type-3 和 type-4 也是如此.)

I am working on a simple HTML for an image gallery. Each row of the gallery can have 2, 3 or 4 images. (In an 2-image row, each image element is named type-2, the same goes to type-3 and type-4.)

現在我想選擇每行的最后一個元素來設置自定義邊距.我的 HTML 是這樣的:

Now I want to select the last element of each row to set a custom margin. My HTML is like this:

<div id="content">
    <div class="type-2"></div>
    <div class="type-2"></div> <!-- I want this, 2n+0 of type-2 -->
    <div class="type-3"></div>
    <div class="type-3"></div>
    <div class="type-3"></div> <!-- this, 3n+0 of type-3 -->
    <div class="type-4"></div>
    <div class="type-4"></div>
    <div class="type-4"></div>
    <div class="type-4"></div> <!-- this, 4n+0 of type-4 -->
    <div class="type-2"></div>
    <div class="type-2"></div> <!-- this -->
    <div class="type-3"></div>
    <div class="type-3"></div>
    <div class="type-3"></div> <!-- this -->
    <div class="type-4"></div>
    <div class="type-4"></div>
    <div class="type-4"></div>
    <div class="type-4"></div> <!-- this -->
</div>

我認為下面的 CSS 會起作用，但它沒有:

I think the following CSS would work but it didn't:

.type-2:nth-of-type(2n+0) {margin-right:0;}
.type-3:nth-of-type(3n+0) {margin-right:0;}
.type-4:nth-of-type(4n+0) {margin-right:0;}

這個 CSS 選擇的是:

What this CSS selects is:

<div id="content">
    <div class="type-2"></div>
    <div class="type-2"></div> <!-- selected by .type-2:nth-of-type(2n+0) -->
    <div class="type-3"></div> <!-- selected by .type-3:nth-of-type(3n+0) -->
    <div class="type-3"></div>
    <div class="type-3"></div>
    <div class="type-4"></div>
    <div class="type-4"></div>
    <div class="type-4"></div> <!-- selected by .type-4:nth-of-type(4n+0) -->
    <div class="type-4"></div>
    <div class="type-2"></div> <!-- selected by .type-2:nth-of-type(2n+0) -->
    <div class="type-2"></div>
    <div class="type-3"></div> <!-- selected by .type-3:nth-of-type(3n+0) -->
    <div class="type-3"></div>
    <div class="type-3"></div>
    <div class="type-4"></div>
    <div class="type-4"></div> <!-- selected by .type-4:nth-of-type(4n+0) -->
    <div class="type-4"></div>
    <div class="type-4"></div>
</div>

我可以編輯我的 HTML 來實現我想要的，但出于好奇，是否有某種 CSS 可以做到這一點?

I can edit my HTML to achieve what I want, but just out of curiosity, is there some kind of CSS for this?

此問題可能與詢問 nth-child 和 nth-of-type 是否可以應用于類——不是元素.我已經知道答案是否定的.我真正想要的是一個純 CSS 解決方案/hack，而選擇的答案就是這樣做的.

this question may look like a duplicate of questions asking if nth-child and nth-of-type can be applied to classes -- not elements. I already knew the answer is no. What I'm really asking for is a pure CSS solution/hack for it, and the chosen answer did just that.

推薦答案

只需 CSS hack，無需修改您的標記，您就可以執行以下操作:

With only CSS hacks, without modifying your markup, you can do something like the below:

[class*=' type-'], [type^='type-']{ /* Set all the divs to float: left initially */
    float: left;
    content: url('http://static.adzerk.net/Advertisers/db5df4870e4e4b6cbf42727fd434701a.jpg');
    height: 100px; width: 100px;
}

.type-2 + .type-2 + div{
    clear: both; /* Clear float for a div which follows two div with class type-2 */
}

.type-3 + .type-3 + .type-3 + div {
    clear: both; /* Clear float for a div which follows three div with class type-3 */
}

.type-4 + .type-4 + .type-4 + .type-4 + div {
    clear: both; /* /* Clear float for a div which follows four div with class type-4 */
}

演示小提琴

這篇關于如何對類使用 nth-of-type -- 而不是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！