javascr ipt和css和html的代码进行格式化，可以选择格式化的样式，不需要联网，浏览器打开即可。-javascr ipt and css and html code format, you can select the style formatting, no networking, the browser can be opened.

家居物联网系统室内监控互联网访问版_程序 stm32 enc28j60 -Home networking system indoor monitoring Internet access version _ procedures

通过js,判断当前浏览器是否联网,从而加载不同的js文件(Determine whether current browsers are connected)