Getting started with node. js

Dom framework cannot be released as scheduled because it runs to another city and has no computers. In this period, the most urgent need was to seek a super lightweight backend to build up my framework, so I reached out to the legendary server-side javascrpt. Backend JS is undoubtedly the node. js of Ryan Dahl, and jaxer developed by the Aptana ide provider.

Http://github.com/tlrobinson/narwhal

First download node. JS, decompress it to the E disk, change it to node, then Enter cmd in the menu, and use the CD command to switch to the decompressed directory of nodejs:

Example 1: Hello world.

Create a hello. js file in the node directory, and then enter:

 
// Var sys = require ("sys"); var sys = require ("util") SYS. Puts ("Hello World ");
 

Then, enter the command in the nameboard.Node hello. jsThe output result of the nameboard Hello world is displayed.

Example 2: Hello World2.

Okay. This time we try to output Hello world from the browser. Create HTTP. js in the node directory and enter:

// Var sys = require ("sys"); var sys = require ("util") var HTTP = require ("HTTP"); http. createserver (function (request, response) {// response. sendheader (200, {"Content-Type": "text/html"}); response. writeheader (200, {"Content-Type": "text/html"}); response. write ("Hello world! "); // Response. close (); response. end ();}). listen (1, 8080); sys. puts ("server running at http: // localhost: 8080 /");
 

Then, enter the command in the nameboard.Node HTTP. jsIn the browser, enterHttp: // localhost: 8080/

Example 3: Hello World2.

Node. js provides a buffer class for converting strings of different encodings. Currently, three types are supported: 'ascii ', 'utf8', and 'binary '. For details, see here.

VaR buffer = require ('buffer '). buffer, Buf = new buffer (256), Len = Buf. write ('\ u00bd + \ u00bc = \ u00be', 0); console. log (LEN + "Bytes:" + Buf. tostring ('utf8', 0, Len ));
 

Example 4: Hello world3.

 
// Synopsis. JS // synopsis abstract, synopsis, outline var HTTP = require ('http'); http. createserver (function (request, response) {response. writehead (200, {'content-type': 'text/plain '}); response. end ('Hello world \ n ');}). listen (8124); console. log ('server running at http: // 127.0.0.1: 8124 /');
 

Front-end address bar:Http: // localhost: 8124/

Example 5: compile a c file

# Include
# Include

Int main (){
Printf ("Hello world !!! ");
Exit (0 );
}