a site is divided into two sections: external optimization and internal optimization. Generally speaking, the two part is we both hands are hard to catch. External optimization usually refers to the construction of the external links, to obtain high quality external links. But the theme of this article is how to do internal optimization, here to share some of my views.
code optimization has several advantages: one is to reduce the file size, speed up access; two is more friendly to search engines, avoid them crawling useless code; three can make the code more convenient to maintain.