for example, a page where a video is played, such as an excellent college, is required to play the video and watch all the videos. If you want to write a script, you cannot call getPosition (), jwplayer.play (), or goNextPage () directly because these methods are not global variables. So I thought, is there any tool that can monitor everything the browser does? Or if you don"t know the method name, the element id, can also call the method of the internal function.