how to use node js

Use jQuery in Node. js and node. jsjquery First, install jquery and npm install jquery. The installed version is 3.1.0. Next, first we will use var $ = require ('jquery '). Save the following code as app. js Var $ = require ('

Detailed description of the use of client sessions in Node. js programming, node. jssession Static websites are easy to expand. You only need to cache all the data and do not need to consider combining stateful content from different servers to users. Unfortunately, most Web applications

Use of the fs. close method in node. js, node. jsfs. close Method description: Close the file asynchronously. Syntax: Copy codeThe Code is as follows:Fs. close (fd, [callback (err)]) Because this method belongs to the fs module, we need to introduce the fs module (var fs = require ("fs") before

The use of the console. dir method in node. js is described as follows: node. jsconsole. dir Method description: Pass obj as a parameter to util. inspect and execute the command to print the returned result to stdout. This function ignores any custom inspect () function objects. Syntax: Copy codeThe Code is as fol

This article mainly introduces socket in node. io event Usage Details. For more information, see socket. the io class library can not only send messages to each other, but also send events to each other through the emit method of the socket port object. In the previous event, emit said that it was used to manually trigger the event. The Code is as follows: Socket. emit (event, data, function (data1, data2 ......){}); When you

Nodejs added a cluster module after v0.6.x to implement multi-process. It uses the child_process module to create and manage processes and increase program performance on multi-core CPU machines. This article describes how to create multiple threads using the cluster module. All friends who use nodejs know that node is single-threaded. That is to say, it runs on an 8-core CPU and can only

just ways to use the network to pass data to the sandbox environment on the client. They are all run in isolation and often operate to non-standard ports that require additional permissions.With its unique advantages, node. JS now plays a key role in the products of many well-known companies.In this article, we will discuss not only how these benefits are achiev

Introduction The popularity of JavaScript has brought about many changes, so that the form of using it for network development has become completely different. Just like in a browser, we can also run JavaScript on the server, from the frontend to the backend. This huge contrast is hard to imagine, just a few years ago, Javascript was embedded as a web page in a sandbox as a Flash or Java applet. Go deep into Node. before using JavaScript, you may need

are just ways to use the network to pass data to the sandbox environment on the client. They are all run in isolation and often operate to non-standard ports that require additional permissions.With its unique advantages, node. JS now plays a key role in the products of many well-known companies.In this article, we will discuss not only how these benefits are ac

Why should you use node. jsThe popularity of JavaScript has changed so much that the way it is being used for web development today has become quite different. Just like in the browser, we can now run JavaScript on the server, spanning from the front to the back, which is unimaginable because JavaScript is like a Flash or Java applet just a few years ago. That way, embedding the Web page runs in a sandbox e

node's handy tip--Compression codeDownload ImageCompress CodeI believe many front-end students will be on the line before the compression JS code, now Gulp Webpack Grunt ... can be easily achieved. But the problem comes, these will not, it is necessary to face dozens of JS files back and forth "copy-compress-Create-paste", this is too impersonal.It can be easily implemented with

Use socket. io and node. js to build a timely communication system, socket. ionode. jsSocket. IO is a websocket library, including the client js and the server nodejs. Official Address: http://socket.ioUse socket. io and nodejs to build a websocket ServerSocket. io can not only build the websocket service of the client

This article mainly introduces the use of Node-based. js build tool Grunt to release ASP. the NETMVC project tutorial and automated build tool Grunt has compilation, compression, unit testing, and other functions. It is very powerful. If you need it, refer to the following. Grunt IntroductionGrunt is a construction tool based on

Use Meteor with Node. js to compile a real-time chat application example, meteornode. js I often see Derby. the framework for js comparison is Meteor. js. similar to Derby, it can also update views in real time on multiple clients

Node. JS has been very popular recently, not only the open-source community is very concerned about it, but Microsoft has even provided official support for it to make node. JS can also run on Windows, Which is node. the further popularity of

First, install, download the installation from the official website, install basic always click on the next step on the line. Note: node. js is Python-based, and it is best to install Python on your computer before installing node. js, preferably Python2.7 or 2.6.Second, Cmd enters the command line, enter

8888 Port //terminal prints the following information Console.log ( ' Server running at http:// 127.0.0.1:8888/' ); In this way, a simple HTTP Server, even if it is finished, the input node app.js can be run, and then access will see the output results.Why use node. jsFace a new technology, ask a few why is always good. Since PHP, Python, and Java can all be

Use q. js in node. js to implement api promise Here we will look at how to use q. js to implement node api promise. 　　I. Everything starts with install The Code is as follows: Npm insta

Use async and await asynchronous operations to solve the problem of fs module asynchronous read/write and synchronization results in node. js, asyncnode. js Async await solves the asynchronous problem. These two keywords are proposed by es7. Therefore, the node and browser v

If there are no tools and plugins to write JavaScript code to encounter syntax errors it takes time to ask a colleague how to check with node. jsReport a syntax error when testing with a browser.1. Click the blue button in the red circle, and the next refresh will automatically debug the breakpoint when the exception is thrown.3. After the error breakpoint, in the console with var a = code, the code is assigned to a (so printing faster), and then ente