Two types of tab applications in web design

Case 2 : There are three tab designs on the Taobao homepage, but if you look closely, you will find that they are different. What is more confusing is why there are only 3 tab designs on the homepage, but they are different? Does one page require the intervention of multiple front ends?

Nowadays, tabs are widely used in web design, but they are generally divided into the following two types: The first type is switching by clicking the mouse. In this case the tab has no link (but adds a More or More link in the selected tab area). The second type is mouse hover switching. In this case, many tabs have links added, so a:hover should take effect, that is, there will be a slide down or color prompt when the mouse is docked. In fact, this is also the practice of providing appropriate feedback to users in Norman’s design philosophy. In actual cases, we have seen some good designs, and also some designs that I do not agree with, which I would like to share briefly here. Case 1 : Yahoo US homepage belongs to the first tab design, but pay attention to the box in the lower right corner.

The first tab is designed to be switched by clicking a button, without any additional links. (top)

The second tab design is a floating switch, but there is no a:hover to feedback the links on the tab. (flat)

The third tab design is a floating switch, adding a:hover feedback link on the tab. (top)

Case three : QQ pop-up window.

The most unpopular QQ pop-up window, there is no link feedback on the tab. I believe that a lot of qq.com traffic is innocently defrauded in this way. (flat)
Insert a paragraph: I have always had some complaints about the design of QQ pop-up windows. A space that can only hold 5 tabs actually indirectly holds 7, so a design for scrolling tabs left and right is necessitated. As for adding a seemingly insignificant but more conspicuous [You can drag the page card to sort], how much real value is there?