jQuery jQuery按未知路径的类选择子元素
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/18016766/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
jQuery select child element by class with unknown path
提问by Adam James
I am trying to figure out the syntax for selecting a nth-child of an element by its class, however I don't know the exact path to the element. I can't do $('parent > child > grandchild > hereIam');
我试图找出按类选择元素的第 n 个子元素的语法，但是我不知道元素的确切路径。我做不到$('parent > child > grandchild > hereIam');
So basically I need to be able to say
所以基本上我需要能够说
$('#thisElement').AllRelativesWithClass('.classToSelect')
How exactly do I do that?
我该怎么做？
回答by Casey
According to this documentation, the find method will search down through the tree of elements until it finds the element in the selector parameters. So $(parentSelector).find(childSelector)is the fastest and most efficient way to do this.
根据此文档， find 方法将向下搜索元素树，直到在选择器参数中找到该元素。所以$(parentSelector).find(childSelector)是最快和最有效的方法来做到这一点。
回答by cfs
$('#thisElement').find('.classToSelect')will find any descendents of #thisElementwith class classToSelect.
$('#thisElement').find('.classToSelect')将找到#thisElementwith 类的任何后代classToSelect。
回答by Joe Meyer
This should do the trick:
这应该可以解决问题：
$('#thisElement').find('.classToSelect')
回答by Sonu Sindhu
Try this
尝试这个
$('#thisElement .classToSelect').each(function(i){
// do stuff
});
Hope it will help
希望它会有所帮助
