“Module” pattern is usually used to encapsulate some logic inside the component and return only the part that supposed to be public. It brings the encapsulation that’s natively not supported in JavaScript.
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Technical interviews are a staple of the tech world: they’re praised, they’re analyzed, they’re criticized, but they just cannot be ignored — after all, they often serve as the ultimate test to the developer’s knowledge. It’s no wonder aspiring developers put their maximum effort into preparing for technical interviews.
This article will deal with how to create a web server in Node.js, which will return a file to a user from a public directory. You may wonder: why do we need Node.js here? Why can’t we use another server? You question surely does make sense. Yes, for returning files other servers are generally more effective. From the other side, Node.js works pretty well, too. Second, before returning a file it can also perform some intellectual activities: for example, refer to a database, check out whether a user is permitted to access the file and give the file to him, if it’s permitted.
Upon the file ending you will see the end event, in the handler of which we will end our response by calling res.end. Thus, the outgoing connection will be closed for the file has been completely sent. The resulting code is quite versatile:
