Javascript code for "snake" games _ javascript skills

This article will introduce you to the greedy snake games written in JS and the use of individual exercises. if you are interested, refer to the following. I hope you can learn about the memories of js when you are greedy, I just learned this today, and I just did it. I also learned the required knowledge:

1. master JS functions,

2. JS array application,

3. learning a small part of JavaScript AJAX

4. application of some functions in JS, such as splice and shift,

Basically, here are some of the key points:
The front-end page can be customized here. I will provide my own layout here:

                       
   Snake