javascript - How does jq get the browser status, whether it is zoomed in the taskbar, and whether it is on the current page

Question

How does jq get the browser status and whether it is reduced to the taskbar

I want to make an H5 desktop notification, but I want it to wait until the browser is reduced to the taskbar. If it is in the expanded state, it cannot be triggered.

I don’t know if jq can do it, because I saw the web version of WeChat and smartqq are like this, but I don’t know if js can do it

Answer 1

First determine whether it is in the current window

if(window.document.hidden){ 
    //new Notification 
}

Answer 2

Isn’t it enough to just look at the source code?
http://pub.idqqimg.com/smartq...
The core code is this sentence:

function isDocumentHidden(){
    return doc.hidden || doc.mozHidden || doc.webkitHidden;
}