HappyNewsMan (TechLead Pratap)

  Benefits of React.js Library Component-Based Architecture React follows a component-based architecture , meaning the UI is divided into small, reusable components that manage their own state and render the user interface. This promotes modularity , reusability , and maintainability . Components can be as simple or complex as needed, and the same component can be reused in different parts of the application. Example: jsx Copy code function Button ( { label } ) { return < button > {label} </ button > ; } function App ( ) { return ( < div > < Button label = "Click me" /> </ div > ); } Virtual DOM React uses a Virtual DOM to optimize the rendering process. Instead of updating the real DOM directly after every state change, React first updates the virtual DOM and then compares it with the real DOM (a process called reconciliation ). This results in better performance , especially in dynamic applications. React minimize...

  Benefits of Angular Framework Two-Way Data Binding Angular provides two-way data binding , which means that any changes to the user interface are immediately reflected in the application’s data model and vice versa. This reduces the need for developers to manually sync the view and the model, which simplifies application development. Example: html Copy code < input [( ngModel )]= "username" > < p > {{ username }} </ p > Here, changes to the input field will automatically update username and vice versa. Component-Based Architecture Angular uses a component-based architecture , making it easier to manage and scale applications. Each component is encapsulated, promoting reusability and modularity . Components are reusable, self-contained pieces of code with their own HTML, CSS, and JavaScript (TypeScript). Example: typescript Copy code @Component ({ selector : 'app-user-card' , templateUrl : './user-card.component.html' , styleUrls ...

 Arrow functions in JavaScript provide several benefits and drawbacks. Understanding these can help you decide when and where to use arrow functions in your code. Benefits of Arrow Functions Concise Syntax Arrow functions provide a more concise and compact syntax compared to traditional function expressions. Example: javascript Copy code // Traditional function expression const add = function ( a, b ) { return a + b; }; // Arrow function const add = ( a, b ) => a + b; Arrow functions eliminate the need for the function keyword, making the code more readable and less verbose. No Binding of this One of the most significant advantages of arrow functions is that they do not bind their own this . Instead, they inherit this from the surrounding lexical scope (the context in which the arrow function was created). Example: javascript Copy code const obj = { name : 'Alice' , greet : function ( ) { setTimeout ( () => { console . log ( this . name ); // ...

  1. What is the Event Loop in JavaScript? Answer: The Event Loop is a mechanism that allows JavaScript to perform non-blocking operations by offloading operations to the system kernel whenever possible. JavaScript is single-threaded, meaning it can do one thing at a time. The Event Loop checks the call stack and if it's empty, it takes the first task from the callback queue and pushes it onto the call stack, thus ensuring asynchronous callbacks are executed. 2. Explain closures and provide an example. Answer: A closure is a function that remembers its lexical scope even when the function is executed outside that lexical scope. This allows the function to access variables from its enclosing scope even after that scope has finished executing. function outerFunction() { let outerVariable = 'I am outside!'; function innerFunction() { console.log(outerVariable); } return innerFunction; } const myFunction = outerFunction(); myFunction(); // logs 'I am ou...