What is the difference between ContentChild and ViewChild?
ContentChild and ViewChild are both decorators in Angular that allow you to access child elements of a component. The main difference between them is the timing of when they retrieve…
How to pass data from parent to child and vice versa in Angular?
In Angular, data can be passed between a parent component and its child component in several ways. Here’s an example of how to pass data from the parent to the…
What is event capturing and event bubbling in Javascript?
Event capturing and event bubbling are two ways that events can propagate through the HTML DOM (Document Object Model) in JavaScript. You can use the addEventListener method in JavaScript to…
What is change detection strategy in Angular?
Change detection in Angular is the process of updating the view or the component template with the new data when the model or the component’s data is updated. Angular has…
What is setTimeout and setInterval in JavaScript?
setTimeout and setInterval are two functions in JavaScript that allow you to schedule a piece of code to be executed after a specified amount of time has passed. setTimeout is…
What is take, skip, takeUntil, combineLatest and pipe in observables?
These are operators in the RxJS library, which is commonly used in Angular for working with observables. Here’s an example that demonstrates the use of these operators: In this example,…
What is interceptor in Angular and how to use?
An Interceptor in Angular is a powerful feature that can be used to pre-process or post-process HTTP requests and responses. An interceptor is a service that implements the HttpInterceptor interface…
What is event looping and eventemitter?
Event looping and EventEmitter are important concepts in JavaScript and Node.js, respectively. Event looping refers to the mechanism in JavaScript that allows the execution of code to be scheduled and…
What is call, apply and bind in JavaScript?
In JavaScript, call, apply, and bind are methods that allow you to invoke a function with a specified this value and arguments. call method: The call method allows you to…
What is closure in JavaScript?
In JavaScript, a closure is a function that has access to variables in its outer scope, even after the outer function has returned. This means that the closure can “remember”…
What is arrow function in javascript?
An arrow function is a concise way of declaring functions in JavaScript. It uses an arrow (=>) to replace the traditional function keyword, and provides a more concise syntax for…
What are the characteristics or attributes of ECMAScript 6 (ES6)?
ECMAScript 6 (ES6), also known as ECMAScript 2015, introduced several new features to JavaScript that make it easier to write complex and maintainable code. Some of the key characteristics or…
What is a difference between var, let and cost?
var, let, and const are all used to declare variables in JavaScript. However, they differ in their scoping and the value they hold: In general, it is recommended to use…
How does HTML5 differ from previous versions of HTML?
HTML5 is the latest version of HTML and it differs from previous versions in several ways. Some of the main differences between HTML5 and previous versions of HTML include: These…
What is the entry component in angular?
In Angular, the entry component is a component that is bootstrapped in the main application module. It acts as the starting point of the application and is responsible for rendering…