1. ModuleLarger programs require modularity, Nodejs is no exception, the code is placed in a different file, each file can be a module, the file path name is a module name. Each module contains three pre-defined variables:
1.require: for loading and using other modules in the current module, passing in a module name, returning a module export object, ". js" can be omitted.
Eg:var fool1 = require ('./foo ');//.foo.js,/home/user/foo
Get Intranet IP address in nodejs, and nodejs get IP Address
Today, my colleague has a demand that the website corresponding to the web server in nodejs can support Intranet access. Later I found that I could modify the hostname attribute in express to my Intranet ip address. However, the problem is that all our machines automatically obtain the Intranet ip addre
Detailed description of encryption operations in nodejs and nodejs
This document describes how to encrypt passwords in nodejs. We will share this with you for your reference. The details are as follows:
I. AboutnodeEncryption modulecryptoIntroduction
It is actually encrypted using MD5, which is not secure. In actual development, you can add salt according to your
Tags: Code core demo Script R.js UI IV str UseDocker Nodejs MongoDBNodejs Application Simple Access MongoDB deployment to DockerThe original address https://www.cnblogs.com/zhangyanbo/p/5851644.html (I encountered the operation of the situation can not continue, so slightly modified to improve)Directory structure.├── app.js├── controller├── Dockerfile├── model├── node_modules├── package.json├── router└── schemas1. Local simple write can be run up a
Operation of the NodejsI. Concept:Reference Baidu Encyclopedia:Http://baike.baidu.com/link?url=aUrGlI8Sf20M_YGk8mh--dM83NhajEdefGvqZkpcwh95CKSqQ8_9C_ 10dyb-ziaprcf66mwnyljhs4reit_ekypvj9bfneq826gf0gqt9ksbf0i0h0qhcpzdxigzfho4t6ifwy08j6v4iqu2z0qzrqTwo. Download:Visit Nodejs official website www.nodejs.org/download/Download the version that matches the machineThree. Installation:Reference Baidu Experience:Http://jingyan.baidu.com/article/b0b63dbfca599a4a
NodeJS implements the routing function instance code, and nodejs implements the routing instance
Previous
This article uses NodeJS to implement routing functions for complex applications
Structure
The project structure is as follows:
The Code is as follows:
Function
[Router. js]
// Load the required module var http = require ('HTTP '); var url = require ('url')
Easy creation of nodejs server (8): How to implement non-blocking, nodejs Server
This section describes how to implement non-blocking operations in nodejs.
Let's first modify the start handler:
Copy codeThe Code is as follows:Var exec = require ("child_process" cmd.exe c;Function start (){Console. log ("Request handler 'start' was called .");Var content = "empty
Recently gave a customer a chat, so he made a nodejs with aThe principle is that after the user first enters, record its ID and the user's WSWhen someone sends the data, look for the ID, then find the WS for the ID, send the message.The core is to do something like a python dictionary with an array.varWebsocketserver = require (' WS '). Server,wss=NewWebsocketserver ({port:8888 });varAlluserdata =NewArray (); Wss.on (' Connection ',function(WS) {Conso
ExpressJust as ASP. NET MVC has the same status as the best MVC framework under the. Nets platform, Express has the same importance in the node. JS Environment. On the Baidu "Nodejs Express" will run out a lot about how to use the development of Express to develop MVC articles, the same content here I do not want to repeat the story, about the beginning of the express article everyone to Baidu search on the good. This is just an essay, not a tutorial,
ObjectiveHere is mainly about the use of nodejs developed before the pit, only to say that the pit is not pits, that is naked bullying, the text has a lot of instructions and pits method, understand the crossing can skip directly.PS: To be honest, Nodejs's pits are really quite large, but easy to get started with and a lot of expansion packs to make your development very easy.1. Code SimplificationTry to use thin code,
A static server instance implemented by Nodejs and a nodejs static instance
Refer to the static server example at cnodejs.org and write the following nodejs static server example, which contains cache, compression, and the following code:Copy codeThe Code is as follows:/*** Static file server test example* User: xuwm* Date: 13-5-17* Time: AM* To change this templ
Nodejs prompts that 'xxx' is not an internal or external command solution. nodejs External commands
Generally, this problem occurs because npm installation fails and the global Module Directory is not added to the system environment variable.
Windows users check whether the npm directory is added to the system variable PATH. If the PATH does not exist, manually add the Directory and restart the CMD consol
Nodejs after installation, you can use IP plus port access, if you want to access the domain name, you can go through Apache or nginx, I use Apache1. Modify the httpd.conf fileServerName app.990996.cnServeralias app.990996.cnProxyrequests offOrder Deny,allowAllow from allProxypass http://127.0.0.1:8360/Proxypassreverse http://127.0.0.1:8360/2, restart the service canUse Apache to do Nodejs agent under Linux
There are two ways for Nodejs to upload images: nodejs
Node: the first method for uploading images
1. first introduce the module "connect-multiparty ":"~ 1.2.5 ",
Add "connect-multiparty" to package. json ":"~ 1.2.5 ",
Switch to the project directory in the command, and run the npm command: npm installl;
Basic configuration complete
Index.html
The red part of app. js is the uploaded Image Code.
Var expr
NodeJs creates basic HTTP servers and nodejs creates servers.The content is simple, but the basics are written and shared with you. If you forget it, you can find it.
Create a server with the following code:
Var http = require ('http'); http. createServer (function (req, res) {res. writeHeader (200, {'content-type': 'text/html'}); res. write ('
Enter http: // 127.0.01: 3000 to access
The port is the
Nodejs-post formula details, nodejs-post details
HTML page content
The NODEJS formula is as follows:
Var http = require ('http'); var querystring = require ('querystring'); var server = http. createServer (function (req, res) {// if your access address is this and the request type is post if (req. url = '/dopost' req. method. toLowerCase () = 'post') {var allDa
A Preliminary Study on nodeJS and nodejs
I. Preface
In the "explore nodeJS" article, we have a general understanding of node, and finally through an example, we learned how to quickly start a simple server.
Today, I read this article again, and found that this article has a little more theoretical knowledge. It is suitable for beginners of node and has a fixed id
3 minutes to quickly build a nodejs local server to run the test html/js, nodejs local server
All the front-end users know that it is quite troublesome to build an environment on their own computers for the company's projects.
First of all: Generally, personal computers do not have good performance in the company's configuration,
Second, setting up a company project involves many cache environments, re
Nodejs code scanning payment and nodejs paymentPreface
This article mainly records the problems I encountered during the code scanning payment process and provides some reference for you. I hope it will help you.Development Environment
Nodejs v8.1.0
Egg v1.1.0
Preparations
Public Account-appid
Merchant ID-mch_id
Key value (a 32-bit password required by th
Easy creation of nodejs servers (2): Component Analysis of nodejs servers,
Next to the previous section, let's analyze the Code:
The http module that comes with the first line request (require) Node. js and assigns it to the http variable.
Next, we will call the function createServer provided by the http module.
This function will return an object, which has a method called listen. This method has a numeric
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