Nodejs allows the modules of libraries to be included in the application. Also the JavaScript works well with JSON and No-SQL databases. The asynchronous behaviour can be implemented using callbacks. For example, Node can process other things while a file is being read off disk, or while waiting for an HTTP request to complete. Node.js lets developers use JavaScript to write Command Line tools and for server-side scripting - running scripts server-side to produce dynamic web page content before the page is sent to the user’s web browser.Įven though the node is single threaded it’s still faster to use asynchronous functions. The most important advantage of using Node is that we can use JavaScript as both a front-end and back-end language.Īs we know, JavaScript was used primarily for client-side scripting, in which scripts were embedded in a webpage’s HTML and run client-side by a JavaScript engine in the user’s web browser. Node.js is an open-source, cross-platform JavaScript run-time environment that executes JavaScript code outside the browser. We will use the JavaScript framework Express.js and the libraries Mongoose and Socket.io to achieve this.īefore we start, lets have a quick look at the basics of Node.js Node.js In this tutorial, we will use the Node.js platform to build a real time chat application that sends and shows messages to a recipient instantly without any page refresh.
#Express talk app how to
By Arun Mathew Kurian How to build a real time chat application in Node.js using Express, Mongoose and Socket.io
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