node js console log

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

folder. 4. Create a New readwords. js file for testing (note that the Code console and function of the encapsulation module should not be written incorrectly) var censor=require("censority");console.log(censor.getCensoreWorlds());console.log(censor.censor("Some very sad,bad and mad text"));censor.addCensoreWorld("gloomy");console.log(censor.getCensoreWorlds());console.log(censor.censor("A very goolmy day.

This article mainly introduces the node. js game sharing that allows multiple users to move their mouse online at the same time. This article provides the server and client code and running methods. For more information, see the recent project requirements, so I studied the websocket Implementation of nodejs, socket. io, which is a widely used framework of nodejs background applications websocket. Preparat

a sync synchronization operation, you must capture the exception, and node. JS does not recommend a synchronous operationTry{Fs.renamesync (Files.upload.path,' Tmp/test.png '); }Catch(e) {Console. log (e); } response.writehead ( $, {"Content-type":"Text/html"}); Response.Write (' '); Response.End (); });}functio

= ObjectWrap::Unwrap(args.This()); Then we can access the s _ attribute and use its. append () method: obj->s_->append(s); Finally, we return the current value of the s _ attribute (Use scope. Close again ): return scope.Close(v8::String::New(obj->s_->c_str())); Because the v8: String: New () method can only accept char pointer as the value, we need to use obj-> s _-> c_str () to obtain it. In this case, you should create a build directory in the plug-in folder. Test Now we can test our

'\', which is also a problem discovered after the deployment is complete. Later, we found that path. basename was directly replaced (if the document was read less, it would suffer ). Adding 1 point to your liking for node. js. :) 3. redis cache frequently queries and rarely changes data. Copy codeThe Code is as follows:GetCountAll: function (objFun ){Redis. get ('articles _ getcountall', function (err, rep

errors: Exception capture in Node. js callback Functions Node. js has many asynchronous APIs, which are processed by the callback function callback. If an error occurscallbackThe first parameter of the function containsErrorObject. If no error occurs, the first parameter isnull. For example: Const fs = require ('fs');

, a lot of memory will be wasted. Because the user needs to wait until the entire file is cached in the memory to accept the file data, this causesThe user experience is quite poor. But fortunately, "(req, res)" both parameters are Stream, so we can use fs. createReadStream () instead of "fs. readFile ()". III. instances To upload a file: (1) create "server. js" The code is as follows: Var http = require ('http ');Var url = require ('URL ');Function

This article mainly introduces node. fs. description of the close method. This article introduces fs. for details about the close method, syntax, parameters, instances, and source code, refer Method description: Close the file asynchronously. Syntax: The 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 use ")) Receiving parameters:

This article mainly introduces node. fs. futimes method usage instructions. This article introduces fs. futimes method description, syntax, receive parameters, use instances, and implement Source Code. For more information, see Method description: Changes the timestamp of the file referenced by the file descriptor provided by a file. Change Timestamp Syntax: The Code is as follows: Fs. futimes (fd, atime, mtime, callback) Because this method belon

synchronization mode, use fs. openSync (). 'W'-open the file in Read mode. If the file does not exist, create'Wx '-the same as 'W' mode. If the file exists, an error is returned.'W + '-open the file in read/write mode. If the file does not exist, create'Wx + '-the same as the 'W +' mode. If the file exists, an error is returned. 'A'-open the file in append mode. If the file does not exist, create'Ax '-the same as 'A' mode. If the file exists, an error is returned.'A + '-open the file in read ap

This article mainly introduces node. fs. fchown method usage instructions. This article introduces fs. fchown method description, syntax, receive parameters, use instances, and implement Source Code. For more information, see Method description: Change the File Ownership (file descriptor ). Syntax: The Code is as follows: Fs. fchown (fd, uid, gid, [callback (err)]) Because this method belongs to the fs module, we need to introduce the fs module (v

This article mainly introduces node. fs. the lchmod method is described in this article. lchmod method description, syntax, receiving parameters, use instances and implementation source code. For more information, see Method description: Change file permissions (do not parse symbolic links ). Syntax: The Code is as follows: Fs. lchmod (fd, mode, [callback (err)]) Because this method belongs to the fs module, we need to introduce the fs module (var

[Node. js learning] -- (1) -- HelloWord, node. js -- helloword Today, I practiced an entry-level case of nodejs, which is very lightweight and fast! Official Website Http://nodejs.org/download/ Download Windows 7 64-bit download msi installation package: Http://nodejs.org/dist/v0.12.0/x64/

Three file writing methods for Node. js and three write methods for node. js This article describes three methods for writing files in Node. js. 1. Write files through the pipeline streamUsing pipelines to transmit binary streams

to the browser. By the way, gzip or deflate compression can be returned to resources based on the compression method requested by the browser. Var PORT = 8000; var http = require ("http"); var url = require ("url"); var fs = require ("fs "); var path = require ("path"); var mime = require (". /mime "). types; var config = require (". /config "); var zlib = require (" zlib "); var server = http. createServer (function (request, response) {response. setHeader ("Server", "