The difference and use of target=_parent and Target=_top

The target parameter is often used when manually changing HTML code, and the commonly used two Target=_blank and target=_self mean:
Target=_blank indicates that the link is opened in a new window;
Target=_self represents the same frame, which opens the link in the current window (or the current tab)
There are also two infrequently used:
Target=_parent, loads the linked file into the parent frameset or parent window that contains the linked frame. If the frame containing the link is not nested, the linked file is loaded in a full-screen browser window, just like the _self parameter.
Target=_top, opens the linked document in the current entire browser window, thus deleting all frames
If you do not write, it means the default value, which is usually related to the browser.

The difference and use of target=_parent and Target=_top