From URL to access page rendering

URL-->DNS

1. First enter... In the browser https://www.baidu.com, The browser requests resolution DNS service , Resolve the domain name to IP Address return .
2. The system will start from the local DNS cache as well as hosts The corresponding... Of the domain name is found in the file IP Address . If you don't go again DNS Request .

IP Address --> The server

3. adopt IP Address Access server , Server listening 80 port , adopt path Return the corresponding resource .
4. Server response template + data , Status code 200. The browser receives resources .

The browser parses the data and renders

5. Browser parsing html-->DOM, analysis css-->CSSOM(CSS The object model ).
6. DOM+CSSOM synthesis render( Render tree ),render Conduct layout( Layout ) Calculate the geometry of each node , Finally, draw each node to the screen painting( Rendering ).