node. JS Basic article

Log output mode

Node Test.js 2>error.log 1>info.log

If you need a log file append node Test.js 2>>error.log 1>>info.log

If you are using Sublimetext-nodejs, you need to modify the following nodes in Nodejs.sublime-build (depending on your operating system)

"cmd": ["taskkill/f/im Node.exe & node $file 2>>error.log 1>>info.log", ""]

If not set, the default output to the system console

Log syntax

Console.log (' Server running at http://127.0.0.1:8888/'); Console.info (' Text:%s! ', message); Console.error (' This is a Error '); Console.warn (' This is a warn ');

Warn or error cannot be distinguished in the log in node. js, uniformly saved in the Exception Log

Output a piece of code execution time

Console.time ("Hi"); Console.log ("It works!"); Console.timeend ("Hi");

http

A simple HTTP Service

var http = require (' http '); Http.createserver (function (request, response) {     Response.writehead (200, {') Content-type ': ' text/html '});  Response.End (' Hello world\n ');}). Listen (8888); Console.log (' Server running at http://127.0.0.1:8888/');

A simple HTTP client

Http.get ({  hostname: ' localhost ',  port:8888,  path: '/',  agent:false  //Create a new agent just for This one request}, function (res) {  var data = ';  Res.on (' Data ', function (chunk) {              data + = Chunk.tostring ();  });  Res.on (' End ', function () {      Console.log ("Data is:" +data);}          ); Http.get (' http://localhost:8888 ', function (res) {  var data = ';  Res.on (' Data ', function (chunk) {              data + = Chunk.tostring ();  });  Res.on (' End ', function () {      Console.log ("Data is:" +data);}          );

　　

　　

Node. JS Foundation article