使用jQuery获取数组的最后一个类名 [英] Get the last classname of an array with jquery

问题描述

我想获得带有类名的数组的最后一项.我的代码看起来像这样

i want get the last item of an array with class names. My code looks like this

var getClassName = [];
getClassName = $(this).attr('class').split();
console.log(getClassName);

在控制台中，我成为得到这个答案

In the console i become get this answer

["classname1 classname2"]

我如何获得班级姓氏?

谢谢

推荐答案

正如詹斯格拉姆(Jensgram)所指出的，您快要到了；如果您想保留特定于jQuery的信息，请参阅他的答案.

As jensgram points out, you're nearly there; see his answer for the detail if you want to stay jQuery-specific.

但是您要让浏览器做很多额外的工作，这是您真的不需要jQuery的情况之一:

But you're making the browser do a lot of extra work, this is one of those times you really don't need jQuery:

var getClassName;
getClassName = this.className.split(' ');
console.log(getClassName[getClassName.length-1]);

<所有主流浏览器(可能还有所有次要浏览器)都支持DOM元素的c0>属性.

不过，除非您是在一个紧密的循环中进行此操作，否则$()和attr调用的额外开销可能并没有太大关系.

Still, unless you're doing this in a tight loop, the extra overhead of the $() and attr calls probably doesn't really matter much.

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