1. What is Ajax? Ajax is abbreviated as Asynchronous Javascript and XML. It is new technique used to create better, faster and more interactive web systems or applications. Ajax uses asynchronous data transfer between the Browser and the web server. This technique is used to make internet faster and user friendly. It is not a […]
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1. What is MongoDB? MongoDB is a document-oriented NoSQL database used for high volume data storage. Instead of using tables and rows as in the traditional relational databases, MongoDB makes use of collections and documents. Documents consist of key-value pairs which are the basic unit of data in MongoDB. Collections contain sets of documents and
1. What is jQuery? jQuery is a feature-rich JavaScript library that makes HTML document traversal and manipulation, event handling, animation, and Ajax much simpler and faster. jQuery has an easy-to-use API that works across many browsers. UI related functions can be written with minimal lines of code using jQuery. 2. What are the core features
1. What is Angular Framework? Angular is a TypeScript-based open-source front-end platform that makes it easy to build applications with in web/mobile/desktop. The major features of this framework such as declarative templates, dependency injection, end to end tooling, and many more other features are used to ease the development. 2. What are the key components
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1. What is JSX? JSX is a XML-like syntax extension to ECMAScript (the acronym stands for JavaScript XML). Basically it just provides syntactic sugar for the React.createElement() function, giving us expressiveness of JavaScript along with HTML like template syntax. In the example below text inside <h1> tag is returned as JavaScript function to the render
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1. What is Node.js? React is an open-source frontend JavaScript library which is used for building user interfaces especially for single page applications. It is used for handling view layer for web and mobile apps. React was created by Jordan Walke, a software engineer working for Facebook. React was first deployed on Facebook’s News Feed
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1. How to create a simple server in Node.js that returns Hello World? Step 01: Create a project directory mkdir myapp cd myapp Step 02: Initialize project and link it to npm npm init This creates a package.json file in your myapp folder. The file contains references for all npm packages you have downloaded to
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1. What is Node.js Process Model? Node.js runs in a single process and the application code runs in a single thread and thereby needs less resources than other platforms. All the user requests to your web application will be handled by a single thread and all the I/O work or long running job is performed
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1. What is Node.js? Node.js is an open-source server side runtime environment built on Chrome’s V8 JavaScript engine. It provides an event driven, non-blocking (asynchronous) I/O and cross-platform runtime environment for building highly scalable server-side applications using JavaScript. 2. What are the benefits of using Node.js? From a web server development perspective Node has a
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1. What is event bubbling? Event bubbling is a type of event propagation where the event first triggers on the innermost target element, and then successively triggers on the ancestors (parents) of the target element in the same nesting hierarchy till it reaches the outermost DOM element. Example: If you click on EM, the handler
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