650) this.width=650; "src=" http://images2015.cnblogs.com/blog/139239/201706/139239-20170602095947336-1982532912.jpg "/>May 30 12 o'clock, node. JS 8 is officially released with a range of new features and performance improvements, and these features and improvements will be supported in the long term (LTS).The most important features and fixes in the node.
downloaded installation package v0.10.26as follows:Step 2: Click on the run above, the following screen will appear:Step 3: Tick the Accept Agreement option and click the Next button:Step 4:node.js The default installation directory is "C:\Program files\nodejs\", you can modify the directory and click Next:Step 5: Click the tree icon to select the installation mode you want, then click Next Step Next (next)Step 6: Click Install to start installing
This article mainly introduces the JS Debugging Tool console command in detail, the need for friends can refer to the nextI. Commands to display informationCopy CodeThe code is as follows:The most common is the console.log.Two: Placeholder console The above concentration supports printf placeholder format, supported placeholders are: characters (%s), integers (%d or%i), floating-point numbers (%f), and objects (%o)Copy CodeThe code is as follows:Effec
"Off-topic"Last introduced the plug-in node. js Tools for Visual Studio (Ntvs) that was developed on VS, which provides very convenient development and debugging capabilities, and of course, in many cases due to platform limitations, you need to run programs on other machines that require remote debugging capabilities , but fortunately, the remote debugging provided by Ntvs is also very convenient."Series I
-time applications that run across SS distributed devices.
Node. js is a platform built on the Chrome JavaScript runtime to build fast and scalable network applications. Node. js uses the event-driven, non-blocking I/O mode, which makes it lightweight and efficient and can p
until you can go online
Front
Write a static page
No-purpose Change style
Write front-end logic
Edge development Front side Test interface
No-purpose Change style
Repeat 4-5 until you can go online
No matter from which aspect, the front end is a handyman, no matter from which angle, the front end is also a little brother face, not the class seems to be.
node.
the event mechanism and asynchronous IO model, not JS. But he needs to choose a programming language to implement his idea that the programming language does not have IO capabilities and needs to be able to support the event mechanism well. JS does not have the IO feature, is inherently used to handle DOM events in the browser, and has a large group of programmers, so it becomes a natural choice.As he wish
About node. js1.1 IntroductionThe V8 engine itself is part of the JS interpretation for Chrome, but Ryan Dahl the V8 to the server for the server software.node. JS is a focus on achieving high-performance Web server optimization experts, after several exploration, after setbacks, encountered V8 and the birth of the project.node.
MVC framework that helps write real-time and interactive applications. It can run in the Node. js or browser environment. It also has a data synchronization engine (Racer. We recommend two learning resources for you: Node. js MVC: Express. js + Derby.
on Node. js even loop mechanism has a certain understanding, view the source code of timer implementation, we can roughly understand the implementation principle of timer, let's start from the main cycle of event loop:
The code is as follows:
While (r! = 0 loop-> stop_flag = 0 ){/* Update global time */Uv_update_time (loop );/* Check whether the timer expires and execute the corresponding timer callback
on Node. js even loop Mechanism has a certain understanding, view the source code of timer implementation, we can roughly understand the implementation principle of timer, let's start from the main cycle of event loop:
The Code is as follows:
While (r! = 0 loop-> stop_flag = 0 ){/* Update global time */Uv_update_time (loop );/* Check whether the timer expires and execute the corresponding timer callback
small web server.I will try to simplify the code in this article to make it understandable to people who are new to node.
Preparation
First, you need to install nodejs. You can download it from the official website. Currently, I have installed v0.12 locally.
After the installation is complete, run the command line to test whether the installation is successful. Enter:node -vThe version number of the currently installed
1.node.js, a server-side JavaScript that allows JavaScript code to run in the backend (out-of-browser environment). 2. Event-driven, asynchronous I/O programming mode (single threaded) is its core. 3.node.js's JavaScript engine is V8, from the Google Chrome project. V8 claims to be the fastest JavaScript engine in the world today. 4.node.js has built-in HTTP server support, which means you can easily implement a combination of Web sites and servers. 5
" to achieve client-server communication, real-time, carrying a smaller head, currently supported by the following browsers:The ideal scenario is to take websocket and comet in a way that IE8 and other browsers take comet mode and do downgrade processing. But that way, the backend needs to implement two logic for processing the request, websocket and comet. So, this article joins node.
icon to select the installation mode you want, then click Next Step Next (next)Step 6: Click Install to start installing node. js. You can also click Back to modify the previous configuration. And then click Next (Next):Installation process:Click the Finish button to exit the Setup wizard.To detect if the PATH environment variable is configured with
is uncertain, it takes a long time (more than 20 minutes), and occasionally an installation failure occurs. Click the rotate arrow icon in front of each package to select the version you want, and the "X" appears when selected to indicate that the package is already selected. Select the package you want to download:Devel Package:gcc-g++: C + + compilergcc-mingw-g++: Mingw32 support headers and libraries for GCC C + +gcc4-g++: g++ subpackageGit:fast Version Control system–core filesMake:the GNU
the application layer (some books are called user mode ), so compared with those kernel engineers, are we frontend or backend?
VII. Comparison between Node. js and traditional php-fpm Models
Traditional PHP running mode (non-libevent and other running Modes ):
Most PHP runtime environments generally have a server wit
" to achieve client-server communication, real-time, carrying a smaller head, currently supported by the following browsers:The ideal scenario is to take websocket and comet in a way that IE8 and other browsers take comet mode and do downgrade processing. But that way, the backend needs to implement two logic for processing the request, websocket and comet. So, this article joins node.
64-bit Relatively simple installation in a Windows environment http://nodejs.org/download/ Link to download the corresponding operating system installation files (install the latest version on the line)Follow the prompts, until the installation succeeds, you can see (C:\Program files\nodejs) under the default installation path, and the default path can be modified at the time of installation.After successful installation, in command prompt input: Node
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