node js use cases

Use Node. js to develop information crawlers and node. js Crawlers Recent projects require some information. Because the projects are written using Node. js, it is natural to

Use node. js to build servers and node. js to build servers Use node to build a small server (in fact, it is to analyze the url and then output the file to the client) Recently, you nee

This article describes how to use npm to publish a Node. JS package tutorial. This article describes how to configure a package. json, register an npm account, publish a package, etc. For more information, see if npm is a Node. JS package manager. During

Detailed Description: use Node. js to write a simple command line tool, node. js command line This article describes how to use Node. js to

This article describes how to use socket in Node. js to create private chat rooms and public chat rooms. For more information, see: In the previous article, we will introduce the use of Angular, Nodejs, and socket. i/O builds chat rooms and multi-user chat rooms. This article continues to introduce

This article mainly introduces node. http. the createServer method is described in this article. createServer method description, syntax, receiving parameters, use instances and implementation source code. For more information, see Method description: This function is used to create an HTTP server and use requestListener as the listener function for request even

This article will introduce you to the front-end and back-end of the practical node. js website, which is very detailed. If you need it, you can refer to what node. js can do? I still don't know where he is widely used, and I have no chance to access such a project. Just because I like it, I made a website and backgrou

This article mainly introduces Node. how to Use the domain module in js exception handling. The memory leakage problems are mentioned at the end of this article. It is worth noting that if you need a friend, you can refer to the domain module provided by NodeJS, it can simplify Exception Handling for asynchronous code. Before introducing this module, we need to f

This article mainly introduces node. http. response. end method usage instructions. This article introduces http. response. end method description, syntax, receive parameters, use instances, and implement Source Code. For more information, see Method description: End the response and tell the client that all messages have been sent. When all the content to be returned is sent, the function must be calle

This article describes how to use the path. normalize method in node. js. This article describes the path. normalize method description, syntax, use examples, and implementation source code. If you need it, refer Method description: Output the path string in the standard format. Syntax: The Code is as follows: Path.

This article mainly introduces node. url in js. the resolve method is described in this article. resolve Method description, syntax, receiving parameters, use instances and implementation source code. For more information, see Method description: Insert or replace the original tag for the URL or href. (You can see the example if you don't understand it) Syntax:

This article describes how to use the console.info method in node. js. This article describes the console.info method, syntax, receiving parameters, use instances, and implementation source code. For more information, see Method description: This method is the same as console. log. From the source code, it directly

This article mainly introduces node. buffer in js. buffer. the byteLength method is described in this article. buffer. byteLength method description, syntax, receive parameters, use instances, and implementation source code. For more information, see Method description: Obtains the length of a string in bytes. This function differs from String. prototype. length

This article mainly introduces node. console in js. log method usage instructions. This article introduces the console. log method description, syntax, receiving parameters, use instances, and implementation source code. For more information, see Method description: Print characters to the standard output stream and end with a line break. Syntax: The Cod

Ah, this is the book again. It's like there's an interactive diagram, uh ... The order of the message response seems to be different from my program.In fact, the problem is not big, the operation instance, the console runs the file App.js open service:var io=require (' Socket.io '). Listen (8080,{log:false}); Io.sockets.on (' Connection ', function (socket) {Socket.on (' msg ', function (data) {Console.log (data), if (data.state) {if (data.state== ' OK ') {socket.emit (' msg ', {' Me ': ' Very g

This article mainly introduces node. http. response. description of the write method. This document introduces http. response. write method description, syntax, receive parameters, use instances, and implement Source Code. For more information, see Method description: Sends the response content to the requested client. Before response. end (), response. write () can be executed multiple times. Syntax:

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

This article mainly introduces node. console in js. this document describes how to use the assert method. assert method description, syntax, receive parameters, use instances, and implement Source Code. For more information, see Method description: This method is the same as assert. OK. If the expression evaluates

This article mainly introduces node. console in js. this document describes how to use the warn method. warn method description, syntax, receive parameters, use instances and implementation source code. For more information, see Method description: This method is the same as console. error. You can see the source c

This article mainly introduces node. buffer in js. description of the write method. This article introduces the buffer. write method description, syntax, receive parameters, use instances, and implement Source Code. For more information, see Method description: Write string into the buffer offset using the specified encoding. Returns the number of octal bytes wr