node js connect to db2

LoopBack is an open source node. JS framework based on Express, optimized for mobile,web and other devices. LoopBack can connect to multiple data sources, write business logic using node. js, and integrate existing services and data.Related articles that may be of interest t

Label:node. js efficiently manipulating MongoDBMongoose Library in short, a convenient package for manipulating MongoDB databases in the node environment, an object model tool similar to Orm,mongoose converts data from a database into JavaScript objects for you to use in your app. Of course, you have to install the Environment node.

great scalability. Also, node. JS does not have a Web container.node. JS's own philosophy is to spend the smallest hardware costs, pursuing higher concurrency and higher processing performance.1.2 Featuresnode. JS uses a model of event-driven, non-blocking I/O that makes him lightweight and efficient.① Single ThreadIn a server-side language such as Java, PHP, or

socketio and socket_id mapping relationship. The node. JS server sends the data to Tomcat with this socket_id, and after a series of processing by the Java section, the different data required by each client is packaged and returned with the corresponding relationship to the socket_id in the returned data. This way, when the node.

MongoDBNode. js driver is officially supported by the native Node. js driver. It is the best implementation so far and has been officially supported by MongoDB. The MongoDB team has adopted the MongoDBNode. js driver as the standard method. Npminstallmongodb@1.4.3MongoDBNode.js driver npminstall The MongoDB

this week is still pretty good, the problem is still put on Evernote. The problem has also appeared before is the difference between localhost and 127.0.0.1. This week in debugging JS Process learned a function, you can let JS like PHP dump an object. Now post it below to share.1 functionDump (arr,level) {2 varDumped_text = "";3 if(!level) level = 0;4 5 //The padding given at the beginning.

This document mainly summarizes the learning experience of Node. js and Mysql. Of course, it can also be seen as the continuation of the previously written message PUSH Service. Briefly describe the background of the application. Our application needs to implement Apple's message PUSH Service APNs. Previously, we have implemented iOS client configuration and function code, as well as the local Provider func

mapping relationship. The node. JS server sends the data to Tomcat with this socket_id, and after a series of processing by the Java section, the different data required by each client is packaged and returned with the corresponding relationship to the socket_id in the returned data. This way, when the node. JS server

Label:Mongoose Library in short, a convenient package for manipulating MongoDB databases in the node environment, an object model tool similar to Orm,mongoose converts data from a database into JavaScript objects for you to use in your app. Of course, you have to install the Environment node. js and MongoDB = "MongoDB installation MongoDB is one of the most popul

Understanding MongooseElegant MongoDB Object Modeling for node. js?Installing Mongoose?$ cnpm Install--save Mongoose?$ cnpm Install--save-dev typescript @types/node @types/mongoose?Source ReferenceImport {Document, model, model, Schema, connect} from' Mongoose '; ?Console.log (' Hello mongodb! ' );?var userschema:sch

Write the Node. js plug-in correctly. Node. js uses JavaScript to write backend results, which deserves more efforts. However, if you need some functions that cannot be used directly or even modules that cannot be implemented at all, can you introduce such results from the C/C ++ library? The answer is yes. All you nee

of the WebSocket protocol, he has almost the same as the client browser WebSocket API events, only to connect, disconnect, message, Errors and other events, so that the application development is very flexible. Example: Building a real-time monitoring system with websocket and node. jsAfter websocket through the browser and the server, we can try to build a real-world application, the real-time monitoring

line), Ucenter (after landing the page); index.html-- login.html-- ucenter.html-- 4. Finally, the routing control, in the routes file of the Index.js varexpress=require (' Express '); varrouter=express. Router (); varuser=require ('.. /database/db ') .user;/*gethomepage.*/ Router.get ('/', function (req,res) { res.render (' Index ', { title: ' index ' }; }); /*login */router.get ('/login ', function (req,res) { Res.render (' Login ',{title: ' login ' }); }); /* Ucenter*/router.post ('/ucenter

}, {collection: "accounts"} ); var User = mongoose.model('accounts', userSchema); User.findOne({name:"WangEr"}, function(err, doc){ if(err) console.log(err); else console.log(doc.name + ", password - " + doc.password); }); var lisi = new User({name:"LiSi", password:"123456"}); lisi.save(function(err, doc){ if(err)console.log(err); else console.log(doc.name + ' saved'); }); }); In the preceding file, run the "node mongo.

Node. js has gradually warmed up, and many friends have begun to pay attention to it. However, on Windows platforms, Cygwin-based installation and configuration environments are required, which can be discouraged by many users. However, it is reported that Microsoft has contacted the Node. js official website and I bel

with undefined. Take a look at the following code to understand: Javascript The Code is as follows: // Connect code 2.1Var bar1 = new foo ();Var bar2 = new foo ("anchor "); Please output the hello variables of the two bar and you will find that one is world and the other is omedas. Obviously, when we declared the first bar1, it was automatically considered by Node.