JavaScript implements dynamic time display method synchronized with local time

The example in this article describes the JavaScript implementation of dynamic time display method synchronized with local time. Share it with everyone for your reference. The specific analysis is as follows:

The example of dynamically displaying time is very simple. Once you understand JavaScript, it can be done with just a few lines of code.

But for some people who have never been exposed to JavaScript, it almost looks like a huge project, and then they search hard for the code on the Internet, and then they can't find it in the vast html code, and finally they can't get the key.
1. Basic goals

Implement a web page text time along with the client (on the viewer's machine) time, using the shortest possible code.

2. Production process

Copy code The code is as follows: