When that click comes, you then want to install the mousemove and mouseup handlers.

当单击发生时，就需要安装mousemove和mouseup 处理程序。

youdao

If they release it over another page element with the mouseup (fn) defined, what behavior should take place?

如果用户用所定义的mouseup (fn)在另一个页面元素之上释放鼠标，那么应该发生什么行为呢？

youdao

If they release it over another page element with the mouseup (fn) defined, what behavior should take place?

如果用户用所定义的mouseup (fn)在另一个页面元素之上释放鼠标，那么应该发生什么行为呢？

youdao