HCL Group Angular Frontend Developer Interview Questions, Process, and Tips

Directives are used to add behavior to existing DOM elements, while components are used to create new custom elements.

• Directives are used to manipulate the behavior of existing DOM elements, such as changing their appearance or adding event listeners.

• Components are used to create custom elements with their own templates, styles, and behavior.

• Directives can be structural (like ngIf and ngFor) or attribute-based (like ng...read more

Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.

• Variable and function declarations are hoisted to the top of their scope, regardless of where they are declared in the code.

• Only the declarations are hoisted, not the initializations.

• Function declarations are hoisted before variable declarations.

Design patterns are reusable solutions to common problems in software design.

• Design patterns help in creating maintainable, scalable, and efficient code.

• They provide a common language for developers to communicate about solutions to recurring problems.

• Examples of design patterns include Singleton, Factory, Observer, and Strategy patterns.

ReplaySubject is a type of Subject in RxJS that records multiple values and replays them to new subscribers.

• ReplaySubject is a type of Subject in RxJS

• It records multiple values and replays them to new subscribers

• It has a buffer size that determines how many values to replay