I have seen the training video that we can launch a vision project from a perspective website, but after watched that , i still donot know how to do that, what is the scrip behind.
You will need to install the client launcher (implicitly meaning you must be on a platform support by the client launcher, meaning a mainstream desktop OS on a common architecture), and you must at least once tell your browser that it can use the Vision Client Launcher application to open links with the vision:// custom protocol.
Once you have opted in to these things, it's ~seamless, but these are required speedbumps to prevent malicious websites from running arbitrary native executables and causing any kind of harm to your system.