by Giorgio
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by Giorgio
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These libraries provide methods to connect to the database and execute queries. Authentication is the process of verifying a user’s identity while authorization is determining what actions can be performed. We use packages like Passport and JWT to implement authentication and authorization. The Timers module in Node.js contains various functions that allow us to execute a block of code or a function after a set period of time. The Timers module is global, we do not need to use require() to import it.
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This is used as a measure to see if you have had any hands-on experience with the language in a working environment before. The ‘package.json’ file is a file that contains the metadata about all items in a project. It can also be used as a project identifier and deployed as a means to handle junior node js developer all of the project dependencies.
What are Promises?
Being an asynchronous platform, Node.js heavily relies on callback. The Multi-Threaded Request/Response Stateless Model is not followed by Web development the Node JS Platform, and it adheres to the Single-Threaded Event Loop Model. The Node JS Processing paradigm is heavily influenced by the JavaScript Event-based model and the JavaScript callback system. As a result, Node.js can easily manage more concurrent client requests.
Explain the use of “Passport.js” in Node.js applications.
- Next up on this compilation of top Node.js interview questions for experienced, let’s check out the advanced category of questions.
- Refer to these answers to evaluate the depth of your candidates‘ responses.
- If you do have someone more technically minded working on your team, then you can even go a step further and prepare your own custom test from scratch.
- It was widely accepted as a backend framework and comes to the top, 2nd year in a row in 2020 of StackOverflow survey.
- Node.js is relatively new compared to other server-side technologies, such as Java and PHP.
- Always favor their asynchronous counterparts, especially in web applications.
‘First impression is the best impression’, you probably have heard this phrase a lot. With junior developer interviews, your first question isn’t necessarily going to be about programming or technical concepts. The RealLifeTesting™ methodology is the secret to our DevSkiller Node.js online testing. This one-of-a-kind testing model provides recruiters with a holistic view of an applicant’s skills.
- These tests should focus on testing the functionality of the endpoint in isolation without making any external requests or dependencies.
- It loads the module at runtime and returns its “exports” object, allowing you to access its functionality within your code.
- Node.js is designed for lightweight performance; it can run into trouble if the app uses heavy CPU resources.
- If candidates can name a few applications that developers use these technologies for, they may be a good match for your team.
- Node.js is an open-source, cross-platform JavaScript runtime environment that executes code outside of a web browser.
- The simple answer to this Node.js interview question is that Node.js does run on Windows, but look for a more comprehensive response that proves the applicants’ expertise.
Instead, they can declare them with a value and access them anywhere in a program. Mid-level developers with Node.js experience should know that the package.json file contains metadata for a specific project. They’ll be able to explain that this file is in the Node.js application or module’s root directory.
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