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javascript - 将标识符添加到单独嵌套组中的重复类

转载 作者:行者123 更新时间:2023-11-28 05:01:13 25 4
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在使用如下代码块时,我尝试向“duplicate-class”类的每个实例添加唯一的类名,该类与“affiliate-logo”类位于同一元素上。

重要说明:

  1. “duplicated-class”代表一个动态变量,可以是任何东西。
  2. 期望的结果是在重复的类后面附加一个数字(“.class-1”、“.class-2”、“.class-3”等......

这是代码结构的示例:

<div id="integrations">
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo duplicate-class"><img src="" alt=""></div>
</div>
</div>
</div>
</div>

<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo duplicate-class"><img src="" alt=""></div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo different-class"><img src="" alt=""></div>
</div>
</div>
</div>
</div>
</div>

post-item 组是从 COS 列表中生成的,其中“duplicate-class”是从必须允许重复值条目的 {{name}} 值中提取的。

虽然我可以找到为包装 ID 的直接后代生成类列表的方法,但我似乎无法找到(或弄清楚)任何产生查找“重复类”的结果的方法,同时更深入地嵌套在生成的结果中。结构。

我最初的想法是:

  1. 识别后项
  2. 在每个 post-item 组中查找“.affiliate-logo”类
  3. 识别“.affiliate-logo”旁边的第二个类(在此示例中:.duplicate-class)并将其分配给变量 (var = approximationClass) <-- 这就是我对如何完成这项检查感到困惑的地方。
  4. 检查 (adjacentClass) 是否与其他 post-item 组中的任何其他 (adjacentClass) 匹配。
  5. 使用计数器充当唯一标识符添加 (var i = i)
  6. if(adjacentClass ===adjacentClass){ $(".duplicate-class').replaceClass('adjacentClass' + i) } else {}

(如果我能弄清楚步骤 3,我实际上会尝试用 javascript 编写该逻辑。)

如果您能就此问题提供任何帮助,我们将不胜感激。

<小时/>

我在尝试寻找解决方案时引用的文章:

How find nested div with same class name in jquery?

How do I access the list of classnames using javascript/jQuery?

jquery select class inside parent div

Target the 2nd instance of a CSS Class

** 进行编辑以修复术语冲突

最佳答案

更新2

在代码片段 2 中,我们使用了 .each() 两次。一次迭代每个 div.affiliate-logo,一次迭代每个 div.affiliate-logo 的第二个类。 for 循环会过滤掉存储在数组中的重复项。最困难的部分是OP遇到的麻烦是获得二等舱。方法如下:

$(this).prop('classList');

在纯 JavaScript 中,classList 是一个属性,当它不带任何 .add.remove 等使用时,它将返回一个数组classNames(在片段 2 的注释中,对此数组中的任何字符串的引用都将是“classString”)。

在全页模式下查看片段 2。详细信息请参见代码片段 2。

更新1

the first 'duplicate-class' becomes 'duplicate-class-1', the second becomes 'duplicate-class-2'

不确定您要做什么。我认为您认为类就像 DOM 对象一样,就像元素一样。查看代码片段并告诉我这是否是您想要的。

片段 1

$('.duplicate-class').each(function(idx, obj) {
var unique = 'duplicate-class' + (idx + 1);
$(this).addClass(unique)
$(this).text('this is ' + unique); //This is just to show it works
});
div {
border: 1px solid black;
height: 40px;
width: 200px;
padding: 10px;
color: white;
background: rgba(0, 0, 0, .3);
}
.affiliate-logo {
border: 2px dashed red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="integrations">
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo duplicate-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>

<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo duplicate-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo different-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
</div>

片段 2

// .each() .affiliate-logo do this...
$('.affiliate-logo').each(function(idx, obj) {

/* Get the classList .prop()erty and store it
|| in a var called list. list is now an array
|| of classes that belong to this particular
|| .affiliate-logo.
*/
var list = $(this).prop('classList');

// Store the second classString in a var called second
var second = list[1];

/* Create an array with the classString of 'affiliate-
|| logo' because we already know that it will be a
|| duplicate. Call this array dupes.
*/
var dupes = ['affiliate-logo'];

/* for every classString that's in dupes array
|| compare it to the value of second. If there's
|| a match bust out of this loop and go on to the
|| next .affiliate-logo.
*/
for (let a = 0; a < dupes.length; a++) {
if (second === dupes[a]) {
return;
}
}

/* Since there were no matches, we continue.
|| Push second in the dupes array so if ever found
|| again, second will be rejected by the previous
|| for loop.
*/
dupes.push(second);

/* Concat second with a dot so it'll pass as a class
|| selector then store it in a var called klass.
*/
var klass = '.' + second;

// each() klass will...
$(klass).each(function(index, item) {

/* concat second + (current)index as a string
|| then addClass() that string to the current
|| div.affiliate-logo.{{klass}}
*/
$(item).addClass(second + index);

/* insert text that shows it's new class. The
|| new unique class can be verified by F12.
*/
$(item).text('This is ' + second + index);
});

});
div {
border: 1px solid black;
height: 40px;
width: 200px;
padding: 10px;
color: white;
background: rgba(0, 0, 0, .3);
}
.affiliate-logo {
border: 2px dashed red;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="integrations">
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo duplicate-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>

<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo duplicate-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo different-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo o-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo x-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo klass-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo a-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo dupe-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo bass-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo wrong-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo no-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo no-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo x-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo logo-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo long-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo x-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo duplicate-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo x-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo no-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
<div class="post-item" data-name="name">
<div class="rss-card" style="">
<div class="hs-rss-item">
<div class="rss-item-banner">
<img class="hs-rss-featured-image" src="" alt="">
<div class="affiliate-logo no-class">
<img src="" alt="">
</div>
</div>
</div>
</div>
</div>
</div>

关于javascript - 将标识符添加到单独嵌套组中的重复类,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/42122876/

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