node js learning curve

1.node.js is essentially a JavaScript execution environment that, like Chrome's console command line, can write JS code directly inside and executeThe two difference is that there are some of their own unique global variables, such as chrome can have window and document, and node. JS has a process and other global variablesThe difference between 2.exports and mod

Today, I practiced a nodejs, which is very light and fast!Websitehttp://nodejs.org/download/DownloadWindows7 64-bit download MSI installation package:Http://nodejs.org/dist/v0.12.0/x64/node-v0.12.0-x64.msiInstallationJust go crazy.Mounting to F-plate F:\nodejsExecute Ordinary JSNew in the installation directoryHello.jsConsole.log ("Hello world!");Go to the installation directory to execute Nodehello.js, after running the following effect:Start the ser

directory: Use Fs.mkdir;3, write the file, and write the content, including a connection;A: Start without files, create files and write content; fs.writefile;Fs.writefile ("File path and name created", "Write File Contents", () =>{})B: Start with file, write content only;Fs.appendfile ("Write File path and name", "Write File Contents", () =>{})4. Read file: Take advantage of Fs.readfile ("path and name of file", "Utf-8", () =>{});If you do not write the second, you will see data returned as buf

', () ={assert.strictequal (sum (), 3); }) It (' Sum (should) return 6 ', () ={assert.strictequal (sum ((6),); }) })})First Mocha must have an assertion module. The assert in the figure is from node. js. Simply assert a class that does some comparison operation on the incoming data.The two parameters of the describe function are the description of the test and the code area of the test. Describe can nes

Using bootstrapUsing the Chinese network CDN Source Load Bootstrap: Modify F:\nodejs\nodejs-bower\views\index.ejsOperating effect:We divide the Index.ejs page into 3 parts: Header.ejs, Index.ejs, Footer.ejs, which are used for the modularization of Web pages.views/├──error.ejs├──footer.ejs├──header.ejs└──index.ejsHeader.ejsFooter.ejsIndex.ejsRun the same effect (slightly)Reference http://blog.fens.me/nodejs-express4/"Node.

RESTRepresentational state Transfer is a set of schema constraints and principles. Applications or designs that meet these constraints and principles are restful.RESTful Web ServicesWeb Service is a platform-independent, low-coupling, self-contained, programmable Web-based application that uses Open XML (a subset of standard common markup languages) to describe, publish, discover, orchestrate, and configure these applications for the development of distributed, interoperable applications.RESTful

); Console.log (Buf.readint16le (0)); 12Copy (Targetbuffer,[targetstart],[sourcestart],[sourceend]) copies the specified position from a buffer object to the target buffer var sbuffer = new Buffer ("Lone Orphan"); var tBuffer1 = new Buffer (6); var tBuffer2 = new Buffer (9); Sbuffer.copy (tBuffer1); Sbuffer.copy (tBuffer2); Console.log (Tbuffer1.tostring ()); Solitary Console.log (tbuffer2.tostring ()); Lone Lonely Beg　　You can see that there is no above, with a com

[any word xx] at least once (point number [any word xx or-] at least once) unlimited @[any word xx or-] at least onceThis is stitching: a3_. b23g @ ABC(\. [\w-] +) + $(point number [any word xx or-] at least once) at least one end. Ab4. ab4.ab4All right, even up to see is:a3_.b23g@ Abc.ab4.ab4.ab4 Wow, is really the format of the mailbox, but the inside with a lot of \w, I still really did not see the mailbox and Chinese characters in the name suffix, so we can change it, let this more in line

Template engine is a tool that generates HTML from a page template according to certain rules.Problem with template engine:(1) The page function logic is coupled with the page layout style, and the website becomes more and more difficult to maintain after the large scale.(2) The complexity of the grammar, for non-technical web designers, the threshold is higher, difficult to learn.(3) The function is too comprehensive, page designers can be programmed on the page, not conducive to functional div

HTTP module, which encapsulates an efficient HTTP server and a recommended HTTP clientHttp.server is an event-based HTTP serverHttp.request is an HTTP client tool that the user sends a request to the server.HTTP Server(1) HTTP. Server implementation, provides a set of low-level API, only flow control and simple parsing.Request when a client request arrives, the event is triggered, providing two parameters, namely HTTP. An instance of Serverrequest and http.serverresponse that represents the requ

Download and install MongoDB downloadReference: MongoDB official website http://www.mongodb.org/Download Mongodb-win32-x86_64-2008plus-ssl-3.0.0-signed,msiTip: See how many bits the system isWMIC OS get OsarchitectureInstallationReference: official website Tutorial http://docs.mongodb.org/manual/tutorial/install-mongodb-on-windows/?_ga=1.253820552.1291971383.1425393574All the way to the point, and specify the installation pathSpecify data File Reference: http://www.cnblogs.com/lipan/archive/2011

This article will share with you the use of node. js is used to develop Weibo instances. After reading the nodejs Development guide, I found that many of the Code in the book is no longer available, because the express version has been upgraded, so today, I will try to develop Weibo instances and recommend them to you. I have been persistently engaged in front-end development before. In recent days, I start

in the base repository of Fedora. Therefore, you can use yum to install Node. js in Fedora. $ Sudo yum install npmIf you want to install the latest version of Node. js, follow these steps to install it using the source code. $ sudo yum groupinstall 'Development Tools'$ wget http://nodejs.org/dist/

directly enter the node environment, and enter console. log ("hello world! ") Test console Node console output Test Node Create a testnode. js file on the machine running Node. js and enter the following test code: Then store t

This is the first article in the Node. js Study Notes series. It mainly explains how to install Node. js on Windows and Linux. The software installation version 0.12.0 is used as an example. I hope you will like it. Simply put, Node. js