how to debug node js

Global Object of basic Node. js tutorial, basic node. js tutorial Global Objects in basic Node. js tutorials In browser JavaScript, window is usually a global object. The global Object in

Node. js notes (5) Talk about routing and node. js notes about Routing The routing usage problem is also mentioned in previous notes, but there is always a "passive" feeling that you must enter an address in the browser to access the corresponding url. We hope to click a button or link to go to another page. We finall

Writing great ES6 style Promises for node. JS is only half the battle. Your great modules must include tests as well to ensure the future iterations don ' t break them. In this lesson, I show you a simple ES6 Promise in node. js, then walk to through creating tests in Mocha using Chai and C hai-as-promised to test both

Node. js checks for updates using the command line tool, and node. js command line With the popularity of Node. js, it becomes easier to develop command line tools using Node.

Talking about node. js database Exception Handling, talking about node. js Exception Handling This article describes how to handle node. js database exceptions: NodeJs version: 4.4.4 Database Link error It is the most troublesome

This article mainly introduces Node. examples of simple web page capturing functions implemented by js. This article uses libraries such as PhantomJS and node-phantomjs to implement these functions. For more information, see the following: web page capturing is a well-known technology, however, there are still a lot of complexities. Simple Web crawlers are still

Node. js solves the problem of obtaining the actual file type of images. The node. js file type A requirement: Assume that there is an image file with the actual type of jpg, and someone is lazy to copy a jpg file directly and save it as a png file with the same name, in this way, as3 will not encounter problems when r

This article mainly introduces Node. stream in js. This article describes what Stream, pipe method, Stream classification, and Readable Stream status switching. For more information, see What is stream? When it comes to stream, it involves the concept of * nix: pipeline-In * nix, the stream is implemented in Shell as data that can be bridge through | (pipeline operator, the output (stdout) of a process can

Node. js static file server ultimate version, node. js static ultimate version First, I would like to 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 fun

This article describes how to get the Buffer object byte length from the Node. js practical code segment. For more information, see what we know under the Node. js framework. Buffer objectIt can provide good support for binary data, so it is necessary to obtain the actual length of bytes of a Buffer object. The

Node. JS event-driven mechanism and node. js event mechanism 1. Event driverBind events and event handlers eventEmitter.on('eventName', eventHandler); We can trigger events through programs. // Trigger event eventEmitter. emit ('eventname '); 2. Instance Var EventEmitter = require ('events '). eventEmittervar a = new

This article mainly introduces. A simple method for reading and writing Redis databases in js applications. Redis is a memory-based high-speed Database. if you need it, please ensure that Redis and Node are installed before you start this article. js and Node. redis extension of js