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Express js tutorial
Express js tutorial




To demonstrate the process of sending the static file it is required to have a simple HTML file which we have already created, you can download it from the given link and place it in your project route directory.ĭownload the file from here and place it in your project root directory. In this example, we will be sending static pages and JSON data Sending Static Pages

express js tutorial

We can also send different types of files and data from our API. The data sent through the POST request is stored in the req object.

  • POST: – This method is used when the user has to pass dynamic data to an API and the API can work on that data.
  • For example in the above code when a user navigated to “/” he or she was directly getting the response of hello world and there is no way for the user to send data to API.
  • GET: – This method is used on those routes where nothing is expected from the user, all he or she will do is navigate to a route of API and some data will be thrown back to the user.
  • The most common example Hello World of Node. In Node.js the new ECMAScript standards can be used without problems, as you don't have to wait for all your users to update their browsers - you are in charge of deciding which ECMAScript version to use by changing the Node.js version, and you can also enable specific experimental features by running Node.js with flags. Node.js has a unique advantage because millions of frontend developers that write JavaScript for the browser are now able to write the server-side code in addition to the client-side code without the need to learn a completely different language. This allows Node.js to handle thousands of concurrent connections with a single server without introducing the burden of managing thread concurrency, which could be a significant source of bugs. The Express philosophy is to provide small, robust tooling for HTTP servers, making it a great solution for single page applications, websites, hybrids, or.

    express js tutorial

    When Node.js performs an I/O operation, like reading from the network, accessing a database or the filesystem, instead of blocking the thread and wasting CPU cycles waiting, Node.js will resume the operations when the response comes back. Node.js provides a set of asynchronous I/O primitives in its standard library that prevent JavaScript code from blocking and generally, libraries in Node.js are written using non-blocking paradigms, making blocking behavior the exception rather than the norm. This allows Node.js to be very performant.Ī Node.js app runs in a single process, without creating a new thread for every request. Node.js runs the V8 JavaScript engine, the core of Google Chrome, outside of the browser. It is a popular tool for almost any kind of project! Node.js is an open-source and cross-platform JavaScript runtime environment.






    Express js tutorial