A, web
network, page
two, web applications
run applications on the network.
Third, the classification of network applications
3.1 c / S : Client / Server, such as: qq, yy, lol
advantages:
Personalized easier
and more secure
network resources and less.
3.2 B / S : Browser / Server, such as: sina, baidu, 163 and the like.
Advantages:
easy to update.
Easy to use, it can be used everywhere.
It takes up little local resources
Four, b / s structure model of FIG.
V. server
Provide some sort of service is a powerful computer, such as: database server, web server (main).
Sixth, the dialogue between the browser and the server how to get started?
To know the contents of the browser (resource) --- request url address of the server and the browser you want the
browser and the server to say the same language (HTTP, hyper text transport protocal: Hypertext Transfer Control Protocol).
Server: accept the request sent by the browser, and the browser's request in response to the results.
Browser: the results of the server response on display.