jQuery-选择器和$（this）

Question

Ok this is a general question about how to solve this issue, not to find some work around for the example given.

Lets say I have a $(this) object and it is a select , if I want to select the selected option and I had an id I could just bust a

$('#id option:selected')

game over.

but with a this I can't go $(this+' option:selected') or anything like that.

I am not so concerned with selecting the option:selected in the example so I don't want to know a workaround solution for this instance.

What I want to know is in general how you combine the subselectors like :has or option:selected with a $(this) situation.

Thanks.

Answer 1

通过使用可选的context参数 ：

$('option:selected', this)

Answer 2

您也可以这样做：

$(this).find('option:selected');