node js mongodb find example

This article describes how to use multi-thread programming in nodejs. in this article, nodejsaddon is used to expand nodejs multi-thread programming with cc ++, for more information about Node. js, see the previous blog post. in implementing sleep in Node. js, I will introduce the usage of

node. JS Service SideTo install the WS module Support firstNPM Install WSService side (Server.js)var GWS; var Websocketserver = require (' ws '). Server, new websocketserver ({port:9000 }), Wss.on (function (WS) { = ws; Console.log (' client connected '); Ws.on (function (message) { console.log (message); (Show, SetInterval);//Every 5 seconds the server pushes the message to the

1: Download node. js and install it, install it from NPM, choose to install it together.2:node-v display version, npm-v display version.3: I am here to agent to the Internet, first set up NPM agent, if the Internet does not need a proxy, you can skip this step. NPM Config set proxy http://proxy3.bj.petrochina:8080NPM Config set Https-proxy http://proxy3.bj.

, Json.parse to convert the JSON text to an object varRetval=json.stringify (arr); Resp.end (retval);//Response Object End Response});//Server starts operation listening PortServer.listen ("localhost",function() {Console.log ("Server started operation, listening on port 3000 ...");});Page code:DOCTYPE HTML>HTMLLang= "Utf-8">Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8"/>Head> title>Get data from node. jstitle> Scriptsrc=

This article describes how to find jquery's parent and child node. For more information, see jQuery. parent (expr) finds Father's Day points and can pass in expr for filtering, for example, $ ("span "). parent () or $ ("span "). parent (". class ") JQuery. parents (expr) is similar to jQuery. parents (expr), but it is used to

; Body>HTML>Scripttype= "Text/javascript">functionrun () {//Changelitext ();}/****************************************************** the startup function called when the window is loaded ****************************************** ***********/$ (document). Ready (function() { $(". Side ul Li"). HTML ("1"); });// -Script>Server.js Code:varHttp=require (' http ');varFs=require (' FS ');varPath=require (' Path ');varMime=require (' MIME ');varCache={};functionsend404 (response) {Response.writ

This article mainly introduces how to add the insertBefore () function to js at a specified position. The example analyzes the techniques of insertBefore () function appending nodes, which has some reference value, for more information about how to add the node function insertBefore () in js at a specified position, se

A simple node. JS File System (fs) read/write example.In nodejs, you can use the fs (file system) module to perform file I/O operations. API link address: the use of fs File System under the http://nodeapi.ucdok.com/#/api/fs.html instance: 1, the module call declaration: var fs = require ('fs'); var path = require ('path '); fs is the file module, and path is the system path module. 2. You can use the write

, dependency. If you have used Linux, you must be familiar with these two concepts. For example I want to install a Ruby, then must first install Libreadline and Libruby, because Ruby must depend on them to run. Why is Windows not dependent on the concept? Because the Windows program is usually installed automatically to help you install, of course, there are exceptions, such as running a big game need to install the VC + + runtime and DirectX Runtim

This article mainly introduces the relevant information about node. js File Upload processing, which is very good and has reference value. If you need it, you can refer to it. Go straight to the topic. Under the premise of the basic framework of Node. js web development, we will do a file upload function. The uploade

This article describes how to save the information about the file sent by payload in Nodejs. For more information, see 1: accept files Http://stackoverflow.com/questions/24610996/how-to-get-uploaded-file-in-node-js-express-app-using-angular-file-upload You can use the following third-party Libraries • Busboy and connect-busboy• Multiparty and connect-multiparty• Formidable• Multer 2: Save the file Ps: no

corresponding document, the default option is--help.Implementation of Vue-init Sub-commandThe main function of Vue-init is to pull the project template file (official or homemade) under the specified git directory into the specified directory, using the following$ vue init 　　There is still a need to parse the PROCESS.ARGV, so the commander.js is introduced in Vue-init, which generates a programProgram . Usage (' 　　Next is to implement the pull template file, after processing, placed in the o

Source: http://www.jb51.net/article/50294.htmJS How to get ul Li iddocument.getElementsByTagName ("Li") [index].idHow do I get the number of LI in ul with JavaScript? document.getElementById (' Myul '). getElementsByTagName (' li '). lengthHTML DOM removechild () methodvar List=document.getelementbyid ("MyList"); List.removechild (List.childnodes[0]);JS Dynamic Add Delete ul node Li and related content

, Json.parse to convert the JSON text to an object varRetval=json.stringify (arr); Resp.end (retval);//Response Object End Response});//Server starts operation listening PortServer.listen ("localhost",function() {Console.log ("Server started operation, listening on port 3000 ...");});Page ANGULARJS Code:DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" "Http://www.w3.org/TR/html4/loose.dtd ">HTMLNg-app= "Notesapp"> Head> MetaCharSet= "Utf-8"> title>Angularjs Get No

= Client.multi (), Multicmd.get ("string Key"), Multicmd.exec (function (Err, Reply) {Console.log (reply.tostring ());}); /Set Expiration Time Client.expire (' string key ', 3);//valid time validation var MyTimer = setinterval (function () {client.get (' string key ', function ( Err, Reply) {if (reply) {Console.log (' I live: ' + reply.tostring ());} else {cleartimeout (MyTimer); Console.log (' I expired ') ); Client.quit ()});}, 1000);//Check how long a value is persisted before it expires var