how to know node js version

Using Node. js to capture beautiful pictures in batches through sitemap. xml, node. jssitemap. xml I have read many versions before, and I have made one myself. 1. You can specify the directory to which the file is saved.2. store articles in different directories3. allows you to set the maximum number of parallel downloads. Next time you are free to download the

Brief introduction node. JS is a platform that lets JavaScript out of the browser running on the server, not the language;The JavaScript engine used by node. JS is a V8 from Google Chrome; JavaScript compatibility issues that run outside the browser without having to worry about headachesThe use of singl

Node. js ~ Deployment on linux and node. jslinux The following uses centOS as an example to deploy the node. js environment. Start centos and download the node. js package. curl --silen

Dom operation in JS can be said to be very common, a lot of web pages of the implementation of small functions, such as the deletion of some elements and other operations can be achieved with JS. So what do we need to know in the DOM to accomplish some of the functionality? Today this article is simple to take everyone into the

Express author TJ said goodbye to Node. js and rushed to Go, tjnode. js First, this is a Farewell Node translated from TJ. js. After reading this article, I have indeed suffered some impact, but I do not agree with some of the author's views, such as I think

Install node. js npm and node. jsnpmI didn't plan to introduce the npm installation of node. js, but I found that the management of some node. js packages is implemented through npm. I

Introduction to the Node. js lightweight Web framework Express4.x User Guide, node. jsexpress4.x Express is a lightweight Web framework that is simple and flexible It is also the most popular Nodejs-based Web framework. With this feature, we can quickly build a complete website (express) Express is now in version 4.x,

, similar to Node. js, asynchronous Python also has a gevent Based on coroutine. coroutine makes asynchronous code maintenance easier, but the learning curve is steep. Application Scenario: if it is a CRUD app, you do not want to directly use Python or Node. js itself is not good at CRUD apps (the vast majority of nod

Detailed description of Node. js Streams file read and write operations, node. jsstreams Node. js is inherently asynchronous and event-driven, and is very suitable for processing I/O-related tasks. If you are dealing with I/O-related operations in the application, you can us

, index) {return new Promise (function (resolve, reject) {fs. readFile (file, 'utf-8', function (err, str) {if (! Err) {resolve (str)} else {reject (err) }}) ;}); return Promise. all (readFilsePromiseList );}). then (function (fileStrArray) {console. log ('after reading the so-called file: '+ fileStrArray );}); This Code indeed shows the elegance of nodejs development. So where is the problem? Currently, the elegant language still relies on the operating system. That is to say, the system restri

and enter "node-v" to ensure that Node is in your environment variables and view the Node you are running. js version. enter "npm-v" to view the version of the Node package management

Amazing node. js Reading Notes: mongodb database interaction, node. jsmongodb This week, I learned how to interact with nodejs databases and used the jade template to build a user-verified website. I encountered several problems. 1. mongodb version is too low Npm ERR! Not compatible with your operating system or archit

Details about the Async and Await functions in Node. js, node. jsasync In this article, you will learn how to use the async function (async/await) in Node. js to simplify callback or Promise. Asynchronous language structure already exists in other languages, such as c #'s as

message box. For example, we create a new VB script file named vb. message. vbs. The content is as follows: msgbox WScript.Arguments(1), vbInformation, WScript.Arguments(0) This script will pop up the first and second parameters as the title and content of the prompt box. You can call it in Node. JS: Var cp = require ('child _ Process') var initApp = function () {var vbsPath = path. join (_ dirname, 'vb. m

Node. js integrates Baidu UE editor and node. jsue Editor Abstract:I recently set up my own blog. I may not be able to write a blog for a while, but I still want to share some good things with you. Blog websites must have an editor for editing articles, so they checked some information online. The background of most Editors is based on java, php, asp, and so on,

Base64 encoding and decoding for node. js learning, and node. jsbase64 Encoding I. Base64 encoding Origin Why is Base64 encoded? Because some network transmission channels do not support all bytes, for example, traditional mail only supports transmission of visible characters, control characters like ASCII codes cannot be transmitted through mail. In this way, th

First go to the official website to download the installation package, two types of installation, one is source code code source installation, one is compiled binary file installation.(i) binary file installationSimply said that after decompression, in the Bin folder already exist node and NPM, if you go into the corresponding file in the execution of the command line a bit of a problem is not, but not the overall, so set this as the global good.Set G

nodejs? I don't think node. js is not suitable for new users. After all, you have to learn PHP from scratch and have a learning process for Web programming. Therefore, the two are almost equivalent in terms of getting started. Also, you need to know about MVC and database connections.You can compare the advantages and disadvantages of getting started.Node. jsAdv

Node. js and Sails ~ Project Structure and Mvc implementation and Log Mechanism, node. jssails This article first introduces the Log Mechanism of node. js and sails from the installation of Sails. You can't wait to see the following, okay. Sails is a

node. js command in--------------------------------node app Prompt and node. js---------------------------------------• After installing node. js, there are two bootable apps: the black