Hire NodeJS Developers
How to Hire a Champion NodeJS Developer?
- Look for experience: Look for candidates with a strong background in NodeJS development and experience building scalable, high-performance applications.
- Evaluate technical skills: Evaluate a candidate’s technical skills by asking them to complete coding challenges or coding exercises that demonstrate their proficiency in NodeJS.
- Assess communication skills: A great NodeJS developer should have strong communication skills, be able to collaborate with others, and be comfortable presenting ideas and solutions.
- Review industry experience: Look for candidates who have experience in your industry, as they will have a better understanding of the challenges and requirements of your specific market.
- Check references: Check the candidate’s references to get a sense of their work ethic, ability to work under pressure, and overall attitude.
- Clearly define the requirements of the role and communicate them effectively to potential candidates.
- Use job descriptions that accurately reflect the role and expectations.
- Conduct a thorough screening process that includes technical and behavioral assessments.
- Use an effective interview process that allows you to evaluate the candidate’s skills, experience, and culture fit.
- Provide a competitive compensation package that includes benefits and incentives to attract top talent. Hire now on TechKluster
Hire Nodejs Developer in three simple steps
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By being a part of the talent pool, you will have access to top-tier job opportunities from the world’s leading companies and startups. Our team works tirelessly to connect you with the best possible opportunities, giving you the chance to work on exciting projects and develop your skills even further.
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Frequently Asked Questions
Developers Resource Center
TechKluster is committed to help nodeJS developers community to achieve their career goals, our developer resource center for nodeJS provides the useful resources which not only will help you succeed at TechKluster but everywhere in your development career. For suggestions email us at nodejs@techkluster.com
Table of Contents
NodeJS Programming Fundamentals
NodeJS is a popular back-end JavaScript runtime that is used for building server-side applications. In this section, we will cover the NodeJS programming fundamentals and provide some code samples to demonstrate these concepts.
Setting up a NodeJS project
To set up a NodeJS project, we first need to install NodeJS on our local machine. Once installed, we can create a new NodeJS project using the following steps:
1. Create a new directory for the project.
2. Open the command prompt and navigate to the project directory.
3. Run npm init command to initialize the project and create a package.json file. This
file contains metadata about the project, including the dependencies required for the project.
Handling Requests and Responses
NodeJS uses the concept of event-driven programming to handle requests and responses. When a request is made, NodeJS creates an event, and a callback function is executed when the event is triggered. Here is a simple example of how to handle requests and responses using NodeJS:
const http = require('http');
const server = http.createServer((req, res) => {
res.write('Hello World!');
res.end();
});
server.listen(8080, () => {
console.log('Server started on port 8080');
});
In this example, we use the http module to create a new HTTP server. The createServer() method takes a callback function that is executed whenever a new request is made to the server. We write the response using the res.write() method and end the response using the res.end() method.
Asynchronous Programming
NodeJS is designed to handle asynchronous programming using callbacks, promises, and async/await. Here is an example of how to use callbacks in NodeJS:
function fetchData(callback) {
setTimeout(() => {
callback('Data fetched successfully');
}, 2000);
}
fetchData((data) => {
console.log(data);
});
In this example, we create a function called fetchData that takes a callback function as a parameter. The fetchData function simulates fetching data by using the setTimeout() function to delay the execution of the callback for 2 seconds. When the callback function is executed, we pass in the data that was fetched as a parameter.
NodeJS Modules
NodeJS allows us to organize our code into modules that can be reused across different parts of our application. Here is an example of how to create a simple module in NodeJS:
// greet.jsfunction greet(name) {
console.log(`Hello ${name}!`);
}
module.exports = greet;
In this example, we create a module called greet that exports a function that takes a name parameter and logs a greeting to the console. The module.exports object is used to export the greet function so that it can be used in other parts of our application.
We can then use the greet module in our main application file as follows:
const greet = require('./greet');
greet('John');
In this example, we use the require() function to import the greet module into our main application file. We can then use the greet function to log a greeting to the console.
These are just a few of the many fundamental concepts of NodeJS programming. Understanding these concepts will help you build robust, scalable, and efficient NodeJS applications.
Simple Web Application using NodeJS
1. Set up the project by creating a new directory for the project and running npm init to create a package.json file
2. Install the necessary dependencies, including express and axios, by running the command npm install express axios.
3. Create a new file called index.js and import the required modules:
const express = require('express');
const axios = require('axios');
const app = express();
const port = 3000;
4. Define the routes to interact with the external API. For example, to retrieve all articles, we can create a GET request handler:
app.get('/articles', async (req, res) => {
try {
const response = await axios.get('https://external-api.com/articles');
res.send(response.data);
} catch (error) {
res.status(500).send(error);
}
});
axios module to make a GET request to the external API and retrieve all articles. We then send the data back to the client using the res.send() method. If an error occurs, we send a 500 status code and the error message using the res.status() and res.send() methods.5. Set up the project by creating a new directory for the project and running npm init to create a package.json file
app.post('/articles', async (req, res) => {
try {
const response = await axios.post('https://external-api.com/articles', req.body);
res.send(response.data);
} catch (error) {
res.status(500).send(error);
}
});
app.put('/articles/:id', async (req, res) => {
try {
const response = await axios.put(`https://external-api.com/articles/${req.params.id}`, req.body);
res.send(response.data);
} catch (error) {
res.status(500).send(error);
}
});
app.delete('/articles/:id', async (req, res) => {
try {
const response = await axios.delete(`https://external-api.com/articles/${req.params.id}`);
res.send(response.data);
} catch (error) {
res.status(500).send(error);
}
});
axios module to make POST, PUT, and DELETE requests to the external API to create, update, and delete articles. We pass in the article data as the request body and the article ID as a URL parameter. We then send the response data back to the client using the res.send() method. If an error occurs, we send a 500 status code and the error message using the res.status() and res.send() methods.6. Finally, we start the server by listening on the specified port:
app.listen(port, () => {
console.log(`Server listening at http://localhost:${port}`);
});
NodeJS Learning Resources
Online Learning Resources
- NodeJS Official Documentation – The official documentation is a great place to start learning about NodeJS. It contains detailed information about the NodeJS API, modules, and other important features.
- NodeSchool.io – NodeSchool.io is an open-source organization that provides free interactive workshops to learn NodeJS and related technologies. The workshops cover a wide range of topics, from basic NodeJS concepts to more advanced topics like debugging and performance optimization.
- Udemy – Udemy is a popular online learning platform that offers a wide range of NodeJS courses. The courses are taught by experienced instructors and cover everything from the basics of NodeJS to advanced topics like building scalable applications and using NodeJS with other technologies.
- Pluralsight – Pluralsight is an online learning platform that offers a variety of NodeJS courses. Their courses are designed to help you learn NodeJS from beginner to advanced level, with hands-on exercises and real-world examples.
- Node University – Node University is an online learning platform that offers a range of NodeJS courses and training programs. Their courses cover a wide range of topics, from basic NodeJS concepts to more advanced topics like building microservices and using NodeJS for machine learning.
Books
- “Node.js in Action” by Mike Cantelon, Marc Harter, TJ Holowaychuk, and Nathan Rajlich – This book covers the basics of NodeJS, including how to build a simple web application, as well as more advanced topics like building real-time applications with WebSockets.
- “Learning Node: Moving to the Server-Side” by Shelley Powers – This book is designed for beginners and covers the basics of NodeJS, including how to use NodeJS to build a simple web application.
- “Node.js Design Patterns” by Mario Casciaro – This book covers advanced NodeJS topics like building scalable applications and using NodeJS with other technologies like MongoDB and Redis.
- “Mastering Node.js” by Sandro Pasquali – This book covers a wide range of NodeJS topics, from the basics of NodeJS to advanced topics like building scalable applications and using NodeJS with other technologies like Docker.
- “Node.js Web Development” by David Herron – This book covers the basics of NodeJS and how to use it to build web applications, including how to use frameworks like Express and Socket.IO.
