10+ Angular JS Developer Interview Questions and Answers

Possible ways to pass data between different components in Angular include Input bindings, Output bindings, Services, and Event Emitters.

• Using Input bindings to pass data from parent to child components

• Using Output bindings to pass data from child to parent components

• Using Services to share data between components

• Using Event Emitters to emit events and pass data between components

To re-run a failed API, you can follow these steps

• Identify the reason for the failure by checking error logs or response codes

• Make necessary corrections to the request parameters or code

• Retry the API call using tools like Postman or by updating the code

• Monitor the response to ensure the issue has been resolved

Multicasting in Angular refers to the ability to broadcast a single value to multiple subscribers.

• Allows a single source to emit data to multiple subscribers

• Uses Subjects or BehaviorSubjects to achieve multicasting

• Helps in scenarios where multiple components need to react to the same data changes

Angular is a popular JavaScript framework for building dynamic web applications.

• Angular is a front-end framework developed by Google.

• It allows for the creation of single-page applications.

• Angular uses TypeScript for building applications.

• It provides features like data binding, dependency injection, and routing.

• Angular has a large community and ecosystem of libraries and tools.

LifeCycle Hooks are functions that allow you to tap into the lifecycle of Angular components.

• LifeCycle Hooks are methods that are called at specific points in the life cycle of a component.

• They allow you to perform actions like initialization, change detection, and destruction.

• Examples of LifeCycle Hooks include ngOnInit, ngOnChanges, ngOnDestroy, etc.

TypeScript is a superset of JavaScript that adds static typing and other features to help developers write more robust code.

• TypeScript is developed and maintained by Microsoft.

• It compiles down to plain JavaScript code that can run in any browser or runtime.

• TypeScript provides features like interfaces, classes, and modules to help organize and structure code.

• Static typing in TypeScript helps catch errors at compile time rather than runtime.

• TypeScript is commonly used with Angu...read more

Angular is a popular JavaScript framework for building web applications.

• Angular is a client-side framework developed by Google.

• It allows developers to build dynamic and responsive web applications.

• Angular uses HTML as a template language and extends its syntax with directives.

• It follows the MVC (Model-View-Controller) architectural pattern.

• Angular provides features like data binding, dependency injection, and routing.

• It has a large and active community with extensive document...read more

Directives in AngularJS are markers on a DOM element that tell AngularJS's HTML compiler to attach a specified behavior to that DOM element.

• Directives are used to create custom HTML tags that serve as new, reusable components.

• They can be used to manipulate the DOM, add event listeners, and create dynamic content.

• Examples of directives include ng-model, ng-repeat, and ng-show.

Services in Angular JS are reusable components that can be injected into controllers or other services to provide functionality.

• Services are singleton objects in Angular JS

• They are used to organize and share code across the application

• Services can be injected into controllers, directives, filters, and other services

• Examples of services in Angular JS include $http for making HTTP requests, $location for interacting with the browser URL, and $timeout for executing code after a ...read more

Directives in Angular JS are markers on a DOM element that tell Angular's HTML compiler to attach a specified behavior to that DOM element.

• Directives are used to create reusable components.

• They can be used to manipulate the DOM.

• Examples include ng-model, ng-bind, ng-show, etc.