Node JS Tutorial

This example will show you how to create client and server which will use udp protocol to communicate. First you need to import node js dgram module. This module will control all udp related issues such as create udp client, create udp server and then you can use client to broadcast udp packet to udp server.

This example will show you how to get user input data from command line in node js application. One way is to use node js build-in process stdin object, the other way is to use a node js third party prompt module.

JavaScript object can only store character sequence value and can not store binary data. But you may need to read and store binary data when make I/O operations such as read / write image file, read / write binary stream through network etc. To resolve this issue, Node JS provide Buffer module to store and …

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Node JS EventEmitter is the object which can emit event to the event loop. It is the class in node js events module. It can be used in many cases such as when http web server receive a client request will use EventEmitter to create a on receive event, when fs module open a file …

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Node JS execute in single process and single thread only, but the execution performance is very high because of event driven design and callback function usage. This article will introduce Node JS event loop mechanism and tell you how to create custom event in Node JS by example.

Node JS is an asynchronous JavaScript framework, all the actions in Node app can not block the code execution flow. This can make the system more efficient and faster. So node JS use callback functions heavily to make the design available. This article will tell you what callback is and how it works in Node …

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