chatbot nodejs

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,

Set up the express ready to write the project, but found that any change JS to use NPM start restart to take effect, this is not good, search for the discovery has such a module supervisor. then install it.1. Install, this must be a global installation then let's start.Npm-g Install Supervisor2. Get to the project directory and execute it.Supervisor App.jsExecution, strange how can not start, checked the information found that the new version of the entry file is Bin/www, you can look at the Pac

completed the setup, but you don't know if it can run correctly, let's write an example file to test it. Create example. js in the C: \ cygwin \ directory InputVaR HTTP = require ('http '); HTTP. createserver (function (request, response ){Response. writehead (200, {'content-type': 'text/html '});Response. End ('}). Listen (8888 ); Console. Log ('server running at http: // 127.0.0.1: 8888 /'); Save (Note: Save As UTF-8 format, otherwise a syntax error will be reported ). Run cygwin and enter n

Nodejs learning notes test drive: nodejs learning notes Test Share Chapter 2 about the test driver. The tests here are mainly aimed at Web backend tests-Why do you need to write test cases (that is, whether test cases are time-consuming) and how to improve your test cases, code Design: how to simplify the writing of test cases and some ideas in the future. 1. Why do you want to write test cases? This habit

How to Build the Net and NodeJS runtime environments of Raspberry Pi, raspberry nodejs The following are the resolutions used by computer monitors. Hdmi_group = 2hdmi_mode = 1 640x350 85Hzhdmi_mode = 2 640x400 85Hzhdmi_mode = 3 720x400 85Hzhdmi_mode = 4 640x480x640x480 72Hzhdmi_mode = 6 640x480 rows = 7 640x480 85Hzhdmi_mode = 8 800x600 56Hzhdmi_mode = 9 800x600 60Hzhdmi_mode = 10 800x600 72Hzhdmi_mode = 11

Nodejs is used to obtain the product category of a certain treasure, and the product category of nodejs treasure I have nothing to worry about. I studied e-commerce websites. My friends opened a store and saw a wide variety of products. So I did a little research. AJAX is used to obtain the product category. Because of the need to log on to the product, I am not busy. The simplest way is to log on to the co

Since my server is a purchased cloud server, the entire configuration is connected to SSH Lnmp 由于云服务器刚使用不久，此前一直是只安装了centos 6.5版本的裸机，因此这次顺道配置了LNMP，整个LNMP环境的安装和LAMP环境的搭建基本一致。附本人参照的配置博客：http://www.cnblogs.com/xiaoit/p/3991037.html，这篇博客只是基础的安装LNMP，并测试Nginx解析php脚本文件，并未对各个环节做详细配置说明，如果想看详细的配置，请自行百度。 node. JS Installation 在Node.js上下载安装包，非源码包，因为安装包是已经被编译过，可以直接使用，源码包安装的话，繁琐坑多。1.在安装之前首先核对自己的系统位数 getconf LONG_BIT 2.在node.js上下载相应版本的安装包(https://nodejs.org/en/download/) 3.通过ftp上传到自己的云服务器上4.解压缩文件 $tar xvJf

Initial Nodejs, nodejs Basic Concepts Node.jsOr Node isJavaScriptRun on the server platform. It can be said that,Node.jsCreatedjavascriptModular development first, earlyjavascriptThe requirements are very simple. They are basically written as functions, followed by process-oriented writing. Later, we gradually introduced the idea of object-oriented development, and then began to write classes. Finally, the

Nodejs global variables and nodejs global variables 1. global Similar to the window in the client javascript Runtime Environment Module1.js: Module. exports = {}; // The global variable global. varA = "abc "; The global object can be omitted in actual use. It is the default root scope, which is equivalent to the window object in the web environment.The global object has several useful attributes: Cons

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NodeJS creates the simplest HTTP server and nodejs creates the server ☆Introduction var http = require('http');http.createServer(function(request, response){ response.writeHead(200, { 'Content-Type': 'text-plain' }); response.end('Hello World\n');}).listen(8124); There is a. createServer server method for the top-level http object.A server is created, and two events related to the server are created.Reque

Nodejs public account payment development, nodejs mail public payment OdeJs public account function development, mobile terminal H5 page call payment function. In the past few days, we have used the payment function called by node and h5 pages to meet the company's needs. Now we repeat the development process to help more developers smoothly complete the development of the payment function. (Node payment fu

Easy creation of nodejs servers (7): Implementation of blocking operations, nodejs servers Let's take a look at what is a blocking operation; I simulate a sleep () method to delay hello star from printing for 10 seconds. RequestHandlers. js Copy codeThe Code is as follows:Function start (){Console. log ("Request handler 'start' was called .");Function sleep (milliSeconds ){Var startTime = new Date (). getTi

Easy creation of nodejs servers (3): Code modularization and nodejs Modularization Most node. js functional blocks exist in the form of modules. Usually there is a unified entry index. js, and then different modules are called to complete the functions we need. Let's take a look at how to turn server. js into a module for the index. js main file to be used. Copy codeThe Code is as follows:Var http = require

Easily create nodejs servers (6): Respond to nodejs servers We then rebuild the server so that the request processing program can return some meaningful information. Let's take a look at how to implement it: 1. Let the request processing program directly return () the information they want to display to the user through the onRequest function.2. Let's start by asking the request handler to return the inform

The author of the well-known NodeJS framework Express, TJ Holowaychuk, tweeted and linked an article on Twitter, announcing the abandonment of NodeJS to Go.The reason he gives is that the go language and Rust, Julia, and so on are one of the many next-generation languages, although not the best language, but mature and robust enough to use the Go language to develop a better system, easier to maintain, erro

For example: Schools have students, teachers, and classes, each of which is a moduleCreate a school local file, new student.js teacher.js klass.js//Because class is a keywordThen implement the contents of each module:Student.jsfunction Add (student) { console.log (' Add student: ' + student)}//Mount Exports.add = addTeacher.jsfunction Add (Teacher) { console.log (' Add Teacher: ' + teacher)}//mount Exports.add = Add //MountKlass.jsStudent teacher require to Klassvar student = require ('./stud

correctly, so let's write a sample file to test it. Establish example.js in the C:\cygwin\ directory Inputvar http = require (' http '); Http.createserver (function (request, response) {Response.writehead ({' Content-type ': ' text/html '});Response.End (' }). Listen (8888); Console.log (' Server running at http://127.0.0.1:8888/'); Save (Note: Save as UTF-8 format, or you will report a syntax error). Run Cygwin, enter node/example.js carriage return in the command window Have you seen the ser

parameter to the Createserver, similar to the callback function. We pass a function to a method that calls this function for callback when there is a corresponding event, which we call an event-driven callback. Next we take a look at the main part of ONrequest (), when the callback is started and our onrequest () function is triggered, two parameters are passed in: request and response. Request: The requested information received; Response: The response that was made after the request was r