2016.12.20
html
The structure of the software:
Software with C/S (Client Server) structure:
For example: QQ, Need for Speed, Fetion, Thunder
Disadvantages of cs-structured software: when updating, users need to download the update package and then install it, and programmers need to develop client and server.
Advantages of cs structure software: Reduce the pressure on the server, and can save a lot of data on the client.
Software of B/S (Browser Server) structure:
For example: Weibo, webQQ, web Fetion, web Thunder
Advantages: When the software version is upgraded, the user does not need to download the update package, and the program of the server can be directly updated. Programmers only need to develop the server side.
Disadvantages: Increase the pressure on the server, the software of bs structure cannot save a large amount of data on the user's computer.
Category of website:
Static website: The data in the static webpage is hard-coded. If you need to modify the content of the webpage, you need to directly modify the code of the webpage. There is no database providing data to it.
Dynamic website: The data of the dynamic website comes from the database, behind which there is a background program to manage the data in the page.
The html language is the basic language for developing web pages:
html (Hypertext Markup Language)
Tags: The language is constructed with tags. You don't need to understand how to learn html, as long as you need to remember the role of tags.
Features of html language:
1. The html language is platform-independent, and any platform can run as long as a browser is installed.
2.html is case insensitive.
The structure of the html language:
<html> The root tag of the html language.
<head></head> The header information of the web page
<body></body> The body of the page
</html>
HTML comments: <!-- Comment content -->