Just practice practiced hand,Hey, maybe, write server script can also yo.Console.log (' Currently executing file is ' +__filename); Console.log (' It's located in ' +__dirname); Console.log (' Starting in ' +process.cwd ());Try{Process.chdir (‘/‘);} Catch(Error) {Console.error (' ChDir: ' +error.message);} Console.log (' Current working directory was now ' +process.cwd ());varFS = require (' FS '); Fs.readfile (__filename,function(Error, data) {if(Error) {returnConsole.error (error.message); } c
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
you need to learn it in depth (again). If necessary, you will certainly have the opportunity to use these available modules.
In addition, one feature of Node is the Node Package Module, which is a built-in function for installing and managing Node modules. It automatically processes dependencies, so you can be sure th
breakfast. Time to go to work!
A function is created here. There are three parameters, and the third parameter is callback. This parameter must be a function.The haveBreakfast function records what it eats to the console and calls the callback function that is passed to it as a parameter. How to Use callback in Node. js
Example of using the filesystem module
HTTP Server and ClientThe node. JS Standard library provides an HTTP module that encapsulates an efficient HTTP server and a simple HTTP client, Http.server is an event-based HTTP server whose core is implemented by the C + + section of the node. JS Downlevel While the inter
of programmer can also be counted as the front end)Heavy service-side calculation and processingwhen it comes to a lot of calculations, node. JS is not the best solution. You certainly don't want to use node. js to build a Fibonacci number calculation service. In general, any CPU-intensive operation can weaken the thr
passed to the master process. If the master process already matches workers, the handle is passed to the worker. If Master does not match a good worker, a worker is created, and then passed and the handle is passed to the worker.In the boundary condition, there are 3 interesting behaviors:Note: Below Server.listen (), is on the underlying "HTTP." Server-->net. The call to the Server class.
1. Server.listen ({fd:7}): In the master and worker communication process, by passing the file, m
/luotianshuai/p/5098408.htmlSecond, Node JS Excellent, shortcomingsAdvantages:1, concurrency High is the choice node JS important advantages2. Suitable for I/O intensive applicationsDisadvantages :1, not suitable for CPU-intensive applications, CPU-intensive applications to node
Give full play to the performance of Node. js programs and give full play to node. js
A Node. JS process only runs on a single physical core. This is because you need to pay special attention when developing scalable servers.
Beca
This article analyzes and explains node through several examples. the use of require in js is very detailed. Here we recommend that you provide a very clear description in the code comments. Here we will not talk nonsense about it. We will provide the Code directly:
The Code is as follows:
/* In node, you can use the require () function to load modules.* The r
. To use components, you must import JS files like importing packages in JAVA. Node. js has two components
Core Modules )-The Core Component is pre-compiled in combination with the Node. js library. The purpose is to open up the features frequently used by programmers to avo
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
See JavaScript references in Node. js, and node. jsjavascript
Early Learning Node. in js (2011-2012), many of them were transferred from PHP. At that time, some people were interested in Node. it is troublesome to restart the code
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 node. js development, the Node Supervisor is used to modify the monitoring file and automatically restart the application. node. jsnode
In the development or debugging of Node. when you modify a js application, you always need
install the Node. js external module.
Install Node. js on Debian
Since Debian 8 (Jessie), Node. js has been incorporated into the official software repository. Therefore, you can insta
This article mainly introduces Node. the buffer and stream modules in js are described in detail. This article describes the Buffer modules, classes: buffer, write Buffer, copy buffer, and stream module. For more information, see
Buffer module
Js was originally designed for
Simple getting started with Node. js in Windows, and getting started with node. js
Recently, Paypal and Netflix announced the migration to Node. js, the server-side Javascript platform has proved its value in the enterprise field.
This article analyzes and explains node through several examples. the use of require in js is very detailed. Here we recommend that you provide a very clear description in the code comments. Here we will not talk nonsense about it. We will provide the Code directly:
The Code is as follows:
/* In node, you can use the require () function to load modules.* The r
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