jQuery-在元素上找到最后一个类 [英] jQuery - find last class on the element

问题描述

如何在不知道确切的类数的情况下在元素上查找最后一个类?

How to find last class on the element without knowing exact number of classes?

我们的元素:

 <div class="class-1 class-2 some-other-class"></div>

使用split的常规方法在这里行不通，因为我们不知道类的数量.我们可以检查.split(' ')的长度吗?

Normal approach with split will not work here, as we do not know the number of classes. Can we check the length of the .split(' ') ?

var i = $('div').prop('class');
var j = i.split(' ')[x];

任何建议，不胜感激.

Any suggestions much appreciated.

推荐答案

最简单的解决方案是使用pop，它访问数组中的最后一个元素.

The simplest solution is to use pop, which accesses the last element in the array.

var lastClass = $('div').attr('class').split(' ').pop();

请注意，pop也会从数组中删除该元素，但是由于您没有对其进行任何其他操作，所以这不是问题.

Note that pop also removes the element from the array, but since you aren't doing anything else with it, that's not a problem.

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