mocha nodejs

://registry.npmjs.orgThe following will provide high-quality NPM source address, cnpm hehe.3. Temporarily modify NPM source address during installationNPM Install Express--registry http://registry.npmjs.orgSummarizeIf you have a stable proxy server or use the proxy is the bestNo proxy conditions can only be used to replace the source address of the way guerrilla.NPM is not very stable abroad, after the installation failed to use NPM cache clean to clear the cache, multiple installation try.You c

Create https service in nodejs and create https in nodejsNodejs creates an https service by Wu xueyingServerr. js Var https = require ('https'); var fs = require ('fs'); var options = {key: fs. readFileSync ('. /keys/server. key '), cert: fs. readFileSync ('. /keys/server. crt '),}; https. createServer (options, function (req, res) {res. writehead( 200); res. end ("hello world! \ N ") ;}). listen (8000 ); Client. js Var https = require ('https'); v

NodeJs basic syntax and type, nodejs basic syntax Preface Today, I want to check the knowledge about Node types. I want to summarize it and see an article on Googol, but the original link is gone. I will pull this article out of the snapshot, if the original author has a problem, contact me! This article is the basis of some JS, and experts will skip it automatically! I have never written JavaScript before.

Nodejs terminal prints progress bar instance code and nodejs progress bar 1. Scenario Import When we batch process a large number of files (for example, upload/download, save, and compile), we often want to know how the current progress is or how many failed (successful) tasks are; when our code or program has been released, a proper (Terminal/command line) progress bar can accurately reflect the installati

NodeJS Study Notes: Connect middleware module (I), nodejs Study Notes I hope you can continue reading my articles in this series. This is also the greatest encouragement and support for me. Let's make common progress and help each other. Now, go to today's topic, What is "Connect" and how to understand middleware? Let's take a look at today's article with questions. How to Understand "Middleware "? In my u

Easy creation of nodejs server (9): non-blocking operations, nodejs Server We need to pass the response object (obtained from the server's callback function onRequest () to the request handler through the request route. Then, the handler can use the functions on the object to respond to the request. Modify server. js first: Copy codeThe Code is as follows:Var http = require ("http ");Var url = require ("url

Easy creation of nodejs server (10): Process uploaded images and nodejs upload images This section describes how to upload an image and display it in a browser. Here we will use the node-formidable module developed by Felix Geisend örfer. It abstracts the parsed file data. To install this external module, run the following command in cmd:Copy codeThe Code is as follows:Npm install formidableIf similar infor

Implement blocking instances in nodejs, while nodejs blocks instances. The inherent single-Thread Programming and asynchronous callback functions in node. js make us sometimes enjoy the worry. First, how can a single thread of node. js achieve high concurrency? This is not the focus of this article. To clarify, node. javascript single thread only means that the javascript engine is single-threaded. In any c

[' callback ' + ' (' + json.stringify (actionresult) + ') ': ActionResult; Res.send (Resultdata); Res.end ()} else {//process not response or Origin response.render or response.send. Process.nexttick ((_res:any) = {if (!_res.finished) {_res.end (); }, Res)}). catch (Processrequesterror = = {Next next (Processrequesterror); })} Through the concatenation of the Routehandler and RequestHandler two methods, we make a single call to our entire fragmented func

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

) {tradiationcallbackbasedthing ( function (Error, data) { if (err) { Reject (ERR); } else {Resolve (data)}}); });}This completes the promise. Next, you can use this technique to write the promise form that you want to promise.Test PromiseWhen I tested the server code, my favorite frame was mocha and chai. Be aware that when testing asynchronous code you need to tell Mocha when the asyn

, type npm run , and then press the TAB key to display all the commands that you can use3, main--loading the import file. Module Introduction method require () when the package is introduced, this field is first checked and used as the entry point for the rest of the modules in the package. If this field does not exist, the require () method looks for the index.js, Index.node, Index.json file under the package directory as the default entry"Main": "./lib/livereload.js"4. devdependencies--the mod

project's globally installed modules to the server in a global way. Next we can easily upload our project to the server. The upload will also become very fast.Then configure our NODE_PATH environment variables. How to configure the above also talked about, there is no need to say more. (Because the project is deployed in a variety of ways, it can be decided in its own case.) )I am using PM2 deployment to manage the Nodejs project, so I wrote it in th

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

1, the relevant configuration and installation, in the following address for reference, the master writing is also very good (Mac and Windows can be downloaded)https://www.jianshu.com/p/dd2d2d0ff1332, in the integration Nodejs when not found Nodejs, follow the following steps to set up and install3, install Nodejs (here I use MacOS, so download pkg package)Mode o

Next, let's see if forever can achieve the goal.First, Forever Introduction Forever is a simple command-nodejs daemon that can start, stop, and restart app apps. Forever is completely based on command line operation, under the Forever process, create node subprocess, monitor the operation of node subprocess through monitor, once the file is updated, or the process hangs, forever will automatically restart the node server to ensure the application is

Tags: blog http using OS data AR code workLearning the front-end aspects of technology, dare not say something, but also a lot of experience, the front is a water pit, learning is always met with all kinds of pits, new technology endless dazzling people. For the purpose of the front-end technology to do some summary, so it took some time to learn the side of the increase in the establishment of this project, by my colleagues and I co-maintenance. Share today, and hope to work with the master of