This runtime environment is implemented on the V8 engine that’s used in programmer Google Chrome. Such coding practices make the program hard to read, and such programs are hard to debug. Programs with a “callback hell” signify that the programmer didn’t code asynchronous logic properly.
Question 10: What is Express JS?
This reduces memory usage, improves performance, and allows faster data transfer. Additionally, streams can pipe data from one stream to another, making it easier to manage data flows. The command line is a text-based user interface used to execute commands in a command-line interface (CLI).
How to read command line arguments in Node.js?
- With this question, the interviewer is trying to assess if you’ve had any previous work experience or internship experience where you dealt with similar working environments or technologies.
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- Node Js is a JavaScript-based programming language that allows web developers to build web applications.
- Ans – “require” is used in CommonJS modules, while import is used in ES6 modules.
- JavaScript | Orders Analyzer | Find an average order value for every weekday – Implement a method which will return a map with a name of day of week as a key and an average total order value.
An assert module is an important tool for writing effective tests in Node.js. Finally, separating your app and server can make switching to a different server easier if necessary. By keeping your app logic separate from your server logic, you can switch to a different server without making any major changes to your code.
What is the event loop in Node Js?
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