Node.js can be used at a variety of platforms. Some examples are stated below:
Node.js is used by professionals and some extremely renowned companies like Netflix and Uber. Evidently, it possesses features that make it the best. Below mentioned are some advantages of using Node.js
Node.js has two types of API functions
The order in which the execution of statements is done by the computer is called Control Flow. The control flow function in Node.js is a code that is applied between Asynchronous function calls. Below given are steps which are used to implement Control Flow Function.
Debugging means relieving your code from any error. Identifying an error can take up many hours for which Node.js has a great tool that can help finding the error.
Open the initial file (typically index.js), activate the Run and Debug pane, and click the Run and Debug Node.js (F5) button. The debugging screen is similar to Chrome DevTools with a Variables, Watch, Call stack, Loaded scripts, and Breakpoints list.
Every developer must be equipped with the latest information and updates on software libraries as they make the task of programming very easy. The most popular and useful modules of Node.js are-
Callback function is employed when a task is complete. Hence it is a precaution against any kind of blocking. In the meantime, the callback function allows other codes to run. With the Callback function, Node.js becomes immensely scalable as it can process a large amount of requests without waiting for any function to return the results.
Even though Node.js is one of the most popular and widely used open sources software, it has its own challenges-
REPL stands for Read-Eval-Print-Loop. This is a virtual environment that comes with Node.js. It is a quick and easy way to test simple Node.js codes.
A test pyramid is a metaphor that is used to make a bunch of software tests of different granularity. For example, unit testing, component testing, integration testing, system testing, end-to-end testing, UI testing.
Middleware is a function that has the access to the requested object, requested response and the next function in the application’s request-response cycle. The middleware function can perform multiple tasks such as; execute code, make changes to the request and the response objects, end the request-response cycle and call the next middleware in the stack.
Exit codes in Node.js are particular codes which help in finishing the processes. This may also include global objects. Some examples of exit code in Node.js are-
The major difference between Nodes.js and Ajax is –
Nodes.js is a server-side platform for developing client-server applications, whereas Ajax is a client-side scripting technique that was basically designed to show the contents of a page without refreshing it.
Node.js is equipped with various security mechanism, some are mentioned below:
Node.js uses several flags in the read/write operations in files. Below mentioned are some of the flags:
Spawn command is designed to run system commands. When Spawn command is used, you send it a system command that is processed on its own but no further code is processed within your node process. Whereas, Fork is a special instance of Spawn. This means that you can create workers for running the exact same Node code base or maybe a different module for a particular task.
Node.js is created with a feature of conducting custom events by using event modules. These event modules include an EventEmitter class that is used to raise and operate custom events. Some important methods of EventEmitter class are:
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