4 node server

callback function. The callback function is the first of the actual arguments is err, and the rest of the arguments are the other returned content. If no error occurs, The value of err will be null or undefined. If an error occurs,err is usually an instance of the Error object. Synchronization mode:Fs.readfilesync (Filename,[encoding]).Fs.openFs.open (Path,flags, [mode], [Callback (Err, FD)])Path, flag is the way to confirm the opening of the file (read-write, read-only, create or not), mode d

,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', 'accept-encoding': 'gzip,deflate,sdch', 'accept-language': 'zh-CN,zh;q=0.8', 'accept-charset': 'GBK,utf-8;q=0.7,*;q=0.3' } We found that all the keys with quotation marks all have '-'. It turns out to be a bad horizontal bar. Reminder:If the key name contains '-', spaces, and other seemingly invalid characters, JS is very tolerant, but you must enclose it in quotation marks. During access, you cannot obtain the value by using

This article mainly introduces how to easily create nodejs servers (4): routing. servers need to perform different operations based on different URLs or requests. We can perform this step through routing, you can refer to the server to perform different operations based on different URLs or requests. We can perform this step through routing. In the first step, we need to first parse the request URL path an

uft-8)The following code is written in Main.js:var // node built-in module can be directly introduced into FS: File system Operation module fs.readfile ("./a.txt", "utf-8",function(err,data) { // Read the file ifthrow err; Console.log (data);}); SetTimeout (function() { console.log ("Timer print! ");},0);After you run main.js with node, you will notice that the timer is printed first (increase

This article mainly introduces a simple node. js server example. This article implements a simple helloworld example and shows how to run this server, for more information, see the following example: hello world. It seems that the first section of each language tutorial will talk about this, and we are no exception. First, create a project directory, which ca

For other third-party modules installed through NPM (third-party modules) or local modules, each module exposes a public API. So that developers can import data. For example Copy codeThe Code is as follows:Var mod = require ('module _ name ') After this statement is executed, the Node will load the built-in module or the module installed through NPM. The require function returns an object. The API exposed by this object may be a function, object, or a

My Node. js learning path (4) -- unit test and node. js unit test NPM installation: Npm install nodeunit-g Supports command line and browser running. Various assertions. In node. js, modularize the method to export exports. If it is an object to export module. exports, the module is the basis of the unit test. See the

MySQLCluster management node configuration file-data node 4G memory bitsCN.com MySQL Cluster management node configuration file-4 GB memory for data nodes Build and use the machine on your own. you can refer [Ndbd default] # TotalSendBufferMemory = 256 M NoOfReplicas = 2 DataMemory = 2500 M IndexMemory = 256 M Data

Node. js notes (4) mysql database operations, node. jsmysql This article does not fully refer to Chapter 11th of the Node Learning Guide.For more information, seeHttp://www.crifan.com/node_js_run_mysql_createclient_error_typeerror_object_has_no_method_createclient/Thanks for his code--------------------------In the se

= Process.env.PORT | | 80;4 5Repos.on (' push ', (push) = = {6Console.log (' push ' + Push.repo + '/' +Push.commit7+ ' (' + push.branch + ') '8 );9 push.accept ();Ten }); One ARepos.on (' Fetch ', (fetch) = = { -Console.log (' fetch ' +fetch.commit); - fetch.accept (); the }); - -Repos.listen (port, () = { -Console.log (' Node-git-server running at http://Localhost:${port} ') +});

Node. js static server implementation method, node. js static Server When you enter a url, the url may correspond to a resource (File) on the server or a directory. The So server analyzes the url and does different things for diff

Notes from the node. JS Development Guide ByvoidChapter 1th Introduction to Node. jsnode. JS is a development platform that allows JavaScript to run on the server, making JavaScript a world-class citizen of the scripting language and serving PHP, Python, Perl, and Ruby on an equal footing.node. JS can serve as a server

What is Node. js? Return the server-side javascript? I will not explain this concept in this article. I can search for it myself to find out that server-side js is not a new technology, but a recent node. the popularity of js broke out. I will explain what node is in a later

javacrip. the libraries with over stars are almost clear javascript. 2. google-based V8 javascript interpretation engine is very fast. As a server language, it may not be the fastest, but it must not be slow. 3. asynchronous + callback operations make the Node. js server highly concurrent 4. The npm and the community

that many dependent components need to be installed. Simply follow the next step. Note: Since all components are downloaded online, it may take a long time to wait. 　　Step 4. Run ash.exe After the installation is complete, an icon will be generated on the desktop (if you select an icon to be generated on the desktop). Do not run this icon! Open the folder and go to the C: cygwinbin directory. This is the default installation directory. If you have mo

This article describes how to build a Node based on zero infrastructure. js, Express, Ejs, Mongodb server, and application development. This article provides a cost tutorial for Windows 8 systems. For other systems, see, if you need a Node, refer to the Introduction Guide for front-end developers in this article. in js, Express, Jade, and Mongodb

This article describes how to build a Node based on zero infrastructure. js, Express, Ejs, Mongodb server, and application development. This article provides a cost tutorial for Windows 8 systems. for other systems, see, if you need a Node, refer to the introduction guide for front-end developers in this article. in js, Express, Jade, and Mongodb

Get started with Node. js, Express, Ejs, Mongodb server, and application development, node. jsmongodb This article is a guide for front-end developers to build a Node from scratch. in js, Express, Jade, and Mongodb server, the reason why Jade is changed to Ejs is that I thin

'); Srvsocket.write (head); Srvsocket.pipe (Cltsocket); Cltsocket.pipe (Srvsocket); });});/ /proxy Server is running Proxy.listen (1337, ' 127.0.0.1 ', () = {//send a request to proxy server Const options = {port:1337, hostname: ' 127 .0.0.1 ', method: ' CONNECT ', Path: ' www.google.com:80 '}; Const REQ = http.request (options); Req.end (); Req.on (' Connect ', (res, socket, head) = {Console.log

)$/ig, maxAge: 60*60*24*365};exports.Compress = { match: /css|js|html/ig};exports.Welcome = { file: "index.html"}; Lists the types of various resources. You can set the Content-Type according to the extension. exports.types = { "css": "text/css", "gif": "image/gif", "html": "text/html", "ico": "image/x-icon", "jpeg": "image/jpeg", "jpg": "image/jpeg", "js": "text/javascript", "json": "application/json", "pdf": "application/pdf", "png": "image/png", "svg": "image/svg+xml", "swf": "application/x-s