node js chat application

Perfect solution to NODE. JS cross-origin problems, node. js cross-Origin My company colleagues (front-end) wrote pages over the past few days and said they could not get the desired JSON. Android iOS can get it, however, he is also a newbie and does not know why he only knows the cross-origin issue of

This article mainly introduces node. js solves the problem of obtaining the actual file type of an image. This article obtains the mime-type of the file type based on the binary stream and file header, then reads the binary header information of the file, and obtains its actual file type, if you need a file, you can refer to the following requirement: Assume that there is an image file of the actual type as

This article mainly introduces. js Implementation of file replication methods and instances, using the FS module, friends can refer to the next Node. js does not provide APIs for directly copying files. If you want to use Node. js to copy files or directories, you need to us

Command line arguments is often used to modify the behavior of a application or specify needed parameters for operation. In this lesson, you'll learn how to access the command line arguments passed to your node. JS application as well as dif Ferent strategies for evaluating and accessing them.To catch what arguement us

Node. js obtains data from the database and node. js database. In this article, we need to use node. js as a small function to obtain data from Sqlserver and display the data on the page. Here we will share with you:App.

The fs module of nodejs does not provide a copy method, but we can easily implement one. this method is to read all the file content into the memory and then write the file, this is not a big problem for small text files, such as grunt-file-copy. I. opening analysis Stream is an abstract interface implemented by many objects in Node. For example, a request to an HTTP server is a stream, and stdout is also a stream. Stream is readable, writable, or bo

The fs module of nodejs does not provide a copy method, but we can easily implement one. This method is to read all the file content into the memory and then write the file, this is not a big problem for small text files, such as grunt-file-copy. I. Opening Analysis Stream is an abstract interface implemented by many objects in Node. For example, a request to an HTTP server is a stream, and stdout is also a stream. Stream is readable, writable, or bo

This article mainly introduces relevant information about the Community version of Node. js static file server. If you need it, please refer to it. First of all, thank github for providing the source code on github. Compared with last night's static file server, it is a little more complex and can learn a lot of new things. The Code contains a fs. stat function and the pipe function of the ReadStream obje

This article mainly introduces node. socket. js. i/O advanced usage skills. This article describes the configuration, room, event, authorization, and other content. For more information, see Socket in the previous blog. IO, I briefly introduced Socket. i/O basic usage and a simple chat room DEMO is created. This article will continue to explore the advanced usage

Node. js Data Encryption Transmission Analysis, node. js Data Encryption Preface For encrypted data transmission, there are several methods that people often use. One is ciphertext transmission, and the other is ciphertext transmission. The other is to encrypt data using keys and decrypt data using public keys, the tra

Node. js code specification, node. js Code When calling a function, there is no space between the function name and the left parenthesis. There is no space between the function name and the parameter sequence. There is a space between all other syntax elements and the left parenthesis.Use the small hump naming method a

Node. js development-socket programming, node. jssocket The net module of Node. js provides socket programming interfaces, so that we can use the underlying socket interfaces to implement application protocols. This time we will

, your portal script is named "app. coffee ", then execute: Copy codeThe Code is as follows:Coffee app. coffeeNote that the coffee extension here cannot be omitted. This method should be the most "official" way to use coffeescript. Simple, direct! In addition, once you use a coffee file as the project portal, the entire project will be compatible with both coffee and js. You can use any require js or coffee

Detailed description of the use of require in node. js, node. jsrequire The descriptions in the code comments are very clear, so there is not much nonsense here. The code is provided directly: Copy codeThe Code is as follows:/* In node, you can use the require () function to load modules.* The require function uses a p

Example of using Node. js to implement RESTful API, node. jsrestful Basic RESTful concepts REST (Representational State Transfer) describes an architecture-style network system that first appeared in Roy Fielding's doctoral thesis in 2000. In the REST service, application status and functions can be divided into variou

',closeByEscape: false}Build an example Let's take a look at my simple example. Use express generator to create a new application, or directly useGetting started with Node. js development-Keep logging on with cookies. .Add a self-written file The ngdialog.htmland servertpl.html files are stored in the public directory of the project, and ngdialog.

This article records that two requests will appear when you use node. js to request favican. ico in the project, wasting resources. After some improvement, record the process and pay attention to it later. The Code is as follows: Var http = require ("http ");Var server = http. createServer ();Server. on ("request", function (req, res) {5 console. log (req. url );Res. end ();});Server. listen (1337, "12

I. Overview:Use ASP. SignalR 2 To create a live chat application. add SignalR to the MVC 5 application and create a chat view to send and display the message.In the demo, the Learning SIGNALR development tasks include:Add that SignalR Library to the MVC 5 application.Create a hub and a Hao startup class to push content

, 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 no

I. Overview Use ASP. SignalR 2 To create a live chat application. Add SignalR to the MVC 5 application and create a chat view to send and display the message. In the demo, the Learning SIGNALR development tasks include: Add that SignalR Library to the MVC 5 application.Create a hub and a Hao startup class to push con