The frame is that the web page is divided into several frame windows (different windows correspond to different pages and are displayed in the form of several web pages), and the addresses of multiple src are obtained at the same time. All frame tags on the page need to be placed in a combined html file. This file only records how the frame is divided and will not display any data, so there is no need to put the
tag. To browse this frame, you must read this file and not other Archives of framed windows.