I needed a problem when I was working on the project today. I wanted to find a string, but I forgot it. It was in that file, so I remembered node. js, finding this string without any pressure, shares with you the following requirements:
The entire directory is about 40 MB, and there are countless files. For a long time, I cannot tell which file the character string belongs. Powerful and eye-catching
Node. js common module collection and node. js collection
It collects some common modules in NodeJS development.MVC Framework-Express
Express is a lightweight and flexible Nodejs Web application framework that can quickly build websites. The Express framework is built on the built-in Http module of Nodejs, And the Http
the query user confidence will be performed under this path. This path starts from the root node // The second parameter: query options client. search ('DC = tiger, DC = com', opts, function (err, res2) {// query result Event Response res2.on ('searchentry ', function (entry) {// obtain the queried object var user = entry. object; var userText = JSON. stringify (user, null, 2); console.
take a look at the specific method of implementing multi-process in the cluster module.
Cluster module implements multi-process
The current cluster has been able to fully achieve load balancing. In cluster, I have already elaborated on it. Let's take a look at the specific implementation.
var cluster = require('cluster');var http = require('http');var numCPUs = require('os').cpus().length;if (cluster.isMaster) { console.log('[master] ' + "start master..."); for (var i = 0; i
The HTTP modul
This article mainly introduces Node. methods for securely calling system commands in js (to avoid injection security vulnerabilities). This article describes the security issues that may occur when connecting strings, for more information about how to use Node, see this article. js calls system commands to avoid common
This article mainly introduces the method and code for starting the script file of node. js at startup. Here, I will share it with you. If you need it, refer to it.
The Code is as follows:
#! /Bin/bash### BEGIN INIT INFO# Provides: xiyoulib# Required-Start: $ all# Required-Stop: $ all# Default-Start: 2 3 4 5# Default-Stop: 0 1 6# Short-Description: Start daemon at boot time# Description: Enable service pr
This article mainly introduces node. buffer in js. buffer. description of the isEncoding method. This article introduces the buffer. buffer. isEncoding method description, syntax, receive parameters, use instances, and implementation source code. For more information, see
Method description:
Checks whether it is a valid encoding parameter and returns true or false.
Syntax:
The Code is as follows:
Buffer.
Use C ++ to write extension modules for node. js and node. js extension modules
Prerequisites: Install node. js, Python2.7, and visual studio 2013.
Process:Install the GYP project generation tool npm install-g
, while an Http connection is different. an http request object is a readable stream, and an http response object is a writable stream.
By default, the stream is transmitted in the form of buffer, unless you set other encoding formats for it. The following is an example:
The code is as follows:
Var http = require ('http ');Var server = http. createServer (function (req, res ){Res. writeHeader (200, {'content-type': 'Text/plain '});Res. end ("Hello, Big Bear! ");});Server. listen (8888 );
, while an Http connection is different. An http request object is a readable stream, and an http response object is a writable stream.
By default, the stream is transmitted in the form of buffer, unless you set other encoding formats for it. The following is an example:
The Code is as follows:
Var http = require ('http ');Var server = http. createServer (function (req, res ){Res. writeHeader (200, {'content-type': 'text/plain '});Res. end ("Hello, Big Bear! ");});Server. listen (8888 );
Node. js debugging skills, node. js debugging
Author: zhanhailiang Date:
1. console. log
Similar to front-end debugging, code debugging is performed by printing related variables step by step.
2. Use the
Common Methods for JavaScript MySQL operations in Node. js, node. jsmysql
1. Create a database connection: createConnection (Object) MethodThis method accepts an object as a parameter. This object has four common attributes: host, user, password, and database. The parameter is the same as the parameter used to connect to a database in php. The attribute list is a
follows:
Head-10 some.txt | node parser. js
For a Readable stream, we can also subscribe to its data and end events to obtain data blocks and receive notifications when the stream is exhausted, as in the typical socket example:
The Code is as follows:
Req. on ('connect ', function (res, socket, head ){Socket. on ('data', function (chunk ){Console.
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.
JS-like Console.log (); You can add and then watch the console log debug in the PHP code line, which does not affect the normal program run.
Reply content:
JS-like Console.log (); You can add and then watch the console log de
2 methods for connecting node. js to MongoDB database tutorial, node. jsmongodb
Preface
The MongoDB Node. js driver is officially supported by the native node. js driver. It is the best
Node. js and C can traverse the largest file in the folder and output the path, size, and node. js path.
Node. js
Traverse the maximum file in the folder and output the path, size
Implementation Code:
/* Traverse the maximum file
Node. js crawls Chinese webpage garbled issues and solutions, node. js Chinese webpage
When Node. js captures a non-UTF-8 Chinese webpage, garbled characters may occur. For example, if Netease's homepage code is gb2312, garbled ch
This article mainly introduces node. in js, You Can format numbers to add thousands of characters. This article provides three implementation methods and provides the instance Code respectively. For more information, see the processing method separated by commas (,).
Regular Expression mode:
The Code is as follows:
"15000000 ". split (""). reverse (). join (""). replace (/(\ d {3})/g, "$1 ,"). split ("").
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