Javascript: implementing regular closure of ad pages _ Javascript tutorial

Javscript: Javascript enables timed closure of ad pages. If the following code is added to the webpage source code in the Javascript tutorial, the window will be automatically closed in 20 seconds! This works well with a small pop-up window! In the Code, "I = 20" indicates that the delay for disabling is 20 seconds, which can be modified at will.

The following is a reference clip: