选择一定数量的带有jQuery的直接同级 [英] select certain number of immediate siblings w/ jQuery

问题描述

我有多个div，如下所示:

I have multiple divs like this:

<div class="small"></div>
<div class="small"></div>
<div class="small"></div>
<div class="small"></div>

<div class="large"></div>
<div class="large"></div>

<div class="small"></div>
<div class="small"></div>
<div class="small"></div>
<div class="small"></div>
<div class="small"></div>
<div class="small"></div>
<div class="small"></div>
<div class="small"></div>

我想每隔4个.small div换一个div，就像这样:

I want to select every 4 .small divs to wrap in another div so it's like this:

<div class="box">
    <div class="small"></div>
    <div class="small"></div>
    <div class="small"></div>
    <div class="small"></div>
</div>

从第一个示例可以看到，可以有4个以上的相邻div，但是我仍然希望每4个.small div进行分组.

As you can see from the first example, there can be more than 4 adjacent ones, but I still want to group every 4 .small divs.

任何想法将不胜感激.谢谢！

Any idea would be much appreciated. Thanks!

推荐答案

这是我过去的做法.

var smallDivs = $('div.small'),
    chunkLength = 4;

for (var i = 0, length = smallDivs.length; i < length; i += chunkLength) {
    smallDivs.slice(i, i + chunkLength).wrapAll('<div class="box" />');
}​

jsFiddle .

我大块将选定的元素分成所需长度的大块，然后在子选择上调用wrapAll().

I chunk the selected elements into chunks of a desired length and then call wrapAll() on the sub-selection.

仅此而已，这就是不使用jQuery的情况...

Just for the hell of it, here is how you'd do it without jQuery...

var smallDivs = document.querySelectorAll('div.small'),
    chunkLength = 4,
    box;

for (var i = 0, length = smallDivs.length; i < length; i++) {
    if (!(i % chunkLength)) {
        box = document.createElement('div');
        box.className = 'box';
        smallDivs[i].parentNode.appendChild(box);
    }

    box.appendChild(smallDivs[i]);

}​

jsFiddle .

当然，对于不支持document.querySelectorAll()或document.getElementsByClassName()的旧浏览器，请将元素选择代码替换为...

Of course, for old browsers that don't support document.querySelectorAll() or document.getElementsByClassName(), replace the element selecting code with...

var divs = document.getElementsByTagName('div'),
    smallDivs = [];

for (var i = 0, length = divs.length; i < length; i++) {
    if ((' ' + divs[i].className + ' ').indexOf(' small ') >= 0) {
        smallDivs.push(divs[i]);
    }
}

jsFiddle .

这篇关于选择一定数量的带有jQuery的直接同级的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！