node js console debug

This article uses several examples to analyze how to use the require () function in node. js to load modules. It is very detailed. For more information, please refer to the detailed descriptions below and write them in comments. Here we will not be so embarrassed. Let's take a look at the details here. Please never comment it out as air. The Code is as follows: /* In

defined previously and is mapped to/routes/user. js. We will call the list function defined in this file. The user list is displayed here. Continue to add: The Code is as follows: Http. createServer (app). listen (app. get ('Port'), function (){Console. log ('express server listening on port' + app. get ('Port '));}); Finally, create an http server and start it. This is almost the case. (The above conte

defined previously and is mapped to/routes/user. js. we will call the list function defined in this file. The user list is displayed here. Continue to add: The code is as follows: Http. createServer (app). listen (app. get ('port'), function (){Console. log ('express server listening on port' + app. get ('port '));}); Finally, create an http server and start it. This is almost the case. (The above conte

mode. Its objects include addListener, on, once, removeListener, removeAllListeners, emit, and other basic event listening modes. First, let's look at an example: Var events = require ("events"); var emitter = new events. eventEmitter (); // creates an object for the event listener // listens to the event some_eventemitter.on ("some_event", function () {console. log ("event triggered, call this callback function") ;}); setTimeout (function () {emitt

can edit and compile it in vs2013.Of course, you can also directly use the node-gyp build command to compile.The test js program is as follows: The code is as follows:Var hello = require ('./hello ');Console. log (hello. hello ());Some problems were encountered, as shown below:1. C: \ Users \ Administrator. node-gyp \

(read the file and then perform subsequent operations) Var fs = require ("fs"); var data = fs. readFileSync ('/fs.txt'); console. log (data. toString (); console. log ("program execution is finished! "); Output result: "File content" "Program execution is finished !" 2. Non-blocking call (synchronous execution of reading files and other operations) Var fs = require ("fs"); fs. readFile ('/fs.txt', funct

Node. js Development Guide: basic introduction to Node. js (1) What is Node. js? According to Node. description of the official js website,

This article mainly introduces how to easily create a node. js server (5): event processing program. This series of articles will create a complete node. js server step by step, if you need it, you can refer to the introduction of an event processor module to provide different feedback for different requests. This mod

module4, open Source component library quality is uneven, update fast, downward incompatible5, Debug inconvenient, error does not stack traceThird, suitable for node JS scene1. Restful APIThis is Nodejs ideal application scenario, can handle tens of thousands of connections, itself does not have too much logic, only need to request the API, organize the data to

interactively and view the running results.Compile a test programWe can also write a very simple terminal program to test whether the installation is successful and works properly. To do this, we will create a "test. js" file, which contains the following code: root@ubuntu-15:~# vim test.jsvar util = require("util");console.log("Hello! This is a Node Test Program");:wq! Now, in order to run the above pro

capture the information and do not display it. At this time, your chat. js should be like this. If you are surprised, you just need to write such code on the server to display a real-time chat record application. Messages = new Meteor.Collection('messages');if (Meteor.is_client) { Template.messages.messages = function(){ return Messages.find({}, { sort: { time: -1 }}); }} Add Message in console This par

provided by HTML5. It uses a "handshake" to implement communication between the client and the server. The real-time performance is good and the header carried is small. Currently, the supported browsers are as follows: Client JavaScript code: Var socket = io. connect ('2017. 0.0.1: 8181 '); // send data to the server socket. emit ('fromwebclient', jsonData); // receives data from the server socket. on ('pushtowebclient', function (data) {// do something .});

For node. JS Development, in the case of the IDE,Webstorm is not the second choice, but it is chargeable (free to use for 30 days). First, let's start by using notepad++ to write the node. JS application. There's a big benefit to this: there's no code highlighting and auto-completion about

This article mainly introduces node. the js entry-level instance helloworld describes node in detail. js simple output example helloworld implementation code and running method. If you need it, refer to the example in this article to describe node.

This article mainly introduces the asynchronous programming practices of when. js under node. js. If you need it, you can refer to the following assumptions for a business scenario: Get and save the rss feed to a file through the rss address, and save the rss address to the file. To complete the business in this scenario, you need to complete three tasks: 1. Rea

Asynchronous programming practices of when. js under node. js, node. jswhen. js Assume a business scenario: Get and save the rss feed to a file through the rss address, and save the rss address to the file. To complete the business in this scenario, you need to complete thre

Node. js file operation method summary, node. js Operation Method Like other languages, Node. js also has file operations. Not to mention node. in