Compatible with various browsers to add to favorites and set as homepage JS Code

First of all, I want to add my favorites and set it to the home page for seemingly simple applications. However, there is no perfect solution for compatibility with IE, Firefox, Chrome, Opera, and other browsers.

First of all, add to favorites and set it to the home page. It looks like a simple application. But there is no perfect solution to compatibility with IE, Firefox, Chrome, Opera, and other browsers. If you don't believe it, check the Baidu homepage to see if Baidu uses javascript code to enable compatibility with various browsers and set it as the homepage or add it to favorites. If Baidu is not broken, you still need to try Baidu.
Next, we will publish a code to add to the favorites. This is provided by @ dasheng kids shoes in the official @ PHP beginner group. It is currently compatible with the IE series and Firefox. As for other browsers, in the pop-up window, the system prompts "add to favorites with Ctrl + D ". Check the Code: