TCS Angular Frontend Developer Interview Questions, Process, and Tips

Q1. What is directives?what is what
Ans. 
Directives are markers on a DOM element that tell AngularJS to attach a specified behavior to that DOM element.
• Directives are used to create reusable components.

• They can be used to manipulate the DOM.

• They can be used to add behavior to an existing DOM element.

• They can be used to create custom attributes.

• Examples include ng-repeat, ng-show, and ng-hide.
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Q2. What is decorator in angular????
Ans. 
Decorators are functions that modify classes, methods, or properties at design time.
• Decorators are used in Angular to add metadata to classes, methods, and properties.

• They are denoted by the @ symbol and placed immediately before the item being decorated.

• Examples include @Component, @Injectable, and @Input.

• Decorators can be used to provide additional functionality or configuration to Angular components.
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Q1. 1. How to share data from one component to another ?
Ans. 
Data can be shared between components using @Input, @Output, services, and state management libraries.
• Use @Input to pass data from parent to child component

• Use @Output to emit events from child to parent component

• Use services to create a shared data source accessible by multiple components

• Use state management libraries like NgRx or Redux to manage application state

• Use route parameters to pass data between components vi
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Q2. 2. How does dependency injection work in Angular ?
Ans. 
Dependency injection is a design pattern used in Angular to provide dependencies to a component or service.
• Dependencies are provided to a component or service through its constructor.

• The Angular injector creates an instance of the dependency and passes it to the component or service.

• Dependencies can be provided at different levels: module, component, or service.

• The @Injectable decorator is used to mark a class as a ser...read more
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