跨度可以是 ul 的孩子和 li 的父母吗？

Question

From the HTML specs, a li must be a child of an ul , ol or menu .

Permitted parents: An <ul>, <ol>, or <menu> element.Though not a conforming usage, the obsolete <dir> can also be a parent.

I need a span between an ul and a li :

This does not throw any warnings or errors, but is it correct?

Answer 1

No. See the docs related to permitted content at https://developer.mozilla.org/en-US/docs/Web/HTML/Element/ul (and the ones you posted yourself).