JS implements the countdown function based on user input minutes, and js implements the countdown Function

JS implements the countdown function based on user input minutes, and js implements the countdown Function

If you don't talk much about it, You can directly post code to everyone. The Code is as follows:

In fact, there have been many contacts before the countdown, but they only use others' source code.
According to the needs of the project, I finally took a hard time to solve a seemingly simple problem that took a week.
Source code can be directly copied and pasted.

Redundant version + simplified version.

<! DOCTYPE html> 
Simplified Version:
<! DOCTYPE html> 
The above section describes how to implement the countdown function of JS based on the user input minutes. I hope it will be helpful to you. If you have any questions, please leave a message for me, the editor will reply to you in a timely manner. Thank you very much for your support for the help House website!