如何在 jQuery 中选择“ this”中的元素?

我知道我可以这样选择一个元素:

$("ul.topnav > li.target").css("border", "3px double red");

但是我该怎么做呢:

$(this > li.target).css("border", "3px double red");
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$( this ).find( 'li.target' ).css("border", "3px double red");

or

$( this ).children( 'li.target' ).css("border", "3px double red");

Use children for immediate descendants, or find for deeper elements.

I use this to get the Parent, similarly for child

$( this ).children( 'li.target' ).css("border", "3px double red");

Good Luck