From Beginning
Node.js is an open-source, cross-platform JavaScript runtime environment designed for server-side and network applications. Built on Chrome's V8 JavaScript engine, it enables JavaScript to run outside the browser, making it a powerful tool for building scalable, high-performance applications, especially for backend services like APIs and real-time applications.
Node.js uses an event-driven, non-blocking I/O model, which makes it highly efficient and suitable for handling multiple connections simultaneously without creating multiple threads.
This is particularly beneficial for building applications like chat apps, streaming services, and APIs that require fast and asynchronous data handling.
Additionally, with Node Package Manager (NPM), developers can access a vast library of reusable code packages, making development faster and easier.
Node.js is also known for its extensive ecosystem, powered by the Node Package Manager (NPM), which provides a massive collection of libraries and modules. This allows developers to quickly build robust applications by leveraging pre-built solutions, fostering a fast and flexible development process.
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Yes,our 50% students are from Non IT Background.
Yes, 100%. We have our own Job Placement Consultancy – My Job Placement.
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Yes Sure, We arrange Our Batches according College Students & Working Professionals.
As per our standard Rules, We have decided a fix duration for every courses. But if any student requires a few more time then no problem.
Yes, We are providing 15/45 Days Internship & 3 to 12 Months Internship also we are providing with Live Project Training & Job Placement.
Node.js is an open-source, cross-platform runtime environment that allows JavaScript to be run on the server side, using the V8 JavaScript engine. It's primarily used to build scalable, efficient, and high-performance network applications, particularly for handling asynchronous, I/O-heavy operations.
JavaScript is a scripting language mainly used for client-side applications, running within browsers. Node.js, on the other hand, is a runtime environment that allows JavaScript to run on the server side. While JavaScript can manipulate HTML and perform front-end tasks, Node.js enables it to perform backend tasks like handling databases, file operations, and server-side logic.
In an event-driven model, actions are handled through events rather than threads. Node.js uses an event loop that listens for events (like HTTP requests) and executes callbacks as responses to these events. It doesn’t block the main thread, allowing it to handle other events, which leads to non-blocking, efficient I/O.
The Event Loop is a core concept in Node.js, allowing asynchronous operations to be managed without creating new threads. It continually checks the event queue for tasks, processes them, and moves to the next. This allows Node.js to handle multiple requests efficiently with a single thread, instead of using multi-threading.
Non-blocking I/O allows Node.js to process multiple I/O operations without waiting for them to complete. For example, when a file read operation is initiated, Node.js can handle other tasks and come back to it once completed. This makes Node.js highly efficient, as it can serve more requests without getting blocked.
NPM (Node Package Manager) is the default package manager for Node.js. It allows developers to download, install, and manage packages or modules that extend the functionality of Node.js applications. NPM also enables developers to share their packages with others in the NPM registry.
A callback is a function passed as an argument to another function, which is executed after the first function completes. In Node.js, callbacks are crucial because they handle asynchronous operations, allowing non-blocking execution. However, they can lead to "callback hell" if not managed well.
Callback hell occurs when there are multiple nested callbacks, making code hard to read and maintain. It can be avoided by using Promises, async/await, or modularizing the code into separate functions.
Promises are a way to handle asynchronous operations in Node.js. They provide a more readable syntax to handle the results of asynchronous tasks, allowing chaining of .then() and .catch() instead of using nested callbacks.
`async` and `await` provide a way to handle asynchronous code in a more synchronous-looking manner. `async` marks a function to handle promises, while `await` pauses the execution until the promise resolves, making the code cleaner and easier to read.
Node.js provides the `fs` module for file operations. Functions like `fs.readFile`, `fs.writeFile`, and `fs.appendFile` allow file reading, writing, and appending, respectively. These can be done both synchronously (blocking) and asynchronously (non-blocking).
Middleware functions are used in Node.js to handle requests, responses, and other logic. In Express.js, middleware functions process requests in a sequence and can perform tasks like logging, authentication, and data parsing before passing control to the next function in the requestresponse cycle.
`process` is a global object in Node.js that provides information about the current Node.js process. It includes methods like `process.exit()` to exit the process, `process.env` for environment variables, and `process.nextTick()` for scheduling a callback in the next iteration of the event loop.
Errors in Node.js are handled using `try/catch` blocks for synchronous code and error-handling functions like `.catch()` for Promises or async functions. Errors in callbacks can be handled by passing them as the first argument to a callback.
Streams in Node.js are a way to handle data that is read or written continuously, making it memory-efficient for processing large files. There are four main types of streams: Readable, Writable, Duplex, and Transform, each serving different I/O needs.
Flexible supported learning
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Apart from technical training in various Website Development, Application Development & Software Development , Patel Web Solution helps you get a foothold I booming IT Industry. 100% Placement Assistance a student completes his / her course successfully. Patel Web Solution Dedicated Placement Cell helps him/her interview with major companies in job roles like programmer, web developer, software tester, database analyst & many more.
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PATEL WEB SOLUTION, an IT Training & Placement institution passionate about creating learning experiences that inspire & Give a good opportunity to work with the good IT companies.
