10+ Kwalee India Interview Questions and Answers

Observable is a stream of data that can be subscribed to, while Promise is a one-time operation that returns a single value.

• Observable can emit multiple values over time, while Promise can only return a single value.

• Observable can be cancelled, while Promise cannot.

• Observable is lazy, meaning it only starts emitting data when it is subscribed to, while Promise starts executing immediately.

• Observable can handle errors within the stream, while Promise can only handle errors at ...read more

Data binding is a way to connect data between the component and the view in Angular.

• Data binding allows for automatic synchronization of data between the component and the view.

• There are three types of data binding in Angular: Interpolation, Property binding, and Event binding.

• Interpolation is used to display component data in the view using double curly braces {{}}.

• Property binding is used to set the value of an element property to a component property using square brackets ...read more

To share ID using route in Angular, use route parameters.

• Define a route with a parameter in the route path, e.g. '/user/:id'

• Access the parameter value in the component using ActivatedRoute service

• Use the parameter value to fetch data or perform actions related to that ID

Hooks are functions that allow you to execute code at specific points in a component's life cycle.

• ngOnInit() - called after the component is initialized

• ngOnChanges() - called when the component's input properties change

• ngDoCheck() - called during every change detection cycle

• ngAfterContentInit() - called after content is projected into the component

• ngAfterContentChecked() - called after every check of projected content

• ngAfterViewInit() - called after the component's view has b...read more

Input and output are used to pass data between components in Angular.

• Input is used to pass data from parent component to child component.

• Output is used to emit events from child component to parent component.

• Input and Output are defined using decorators @Input and @Output respectively.

• Example:

Market research is the process of gathering and analyzing information about a market, product, or service to make informed business decisions.

• It involves collecting data about customers, competitors, and market trends.

• It helps businesses understand customer needs and preferences.

• It can be conducted through surveys, focus groups, and data analysis.

• Examples include researching the demand for a new product, analyzing customer satisfaction with a current product, and identifying ...read more

Landing pages are standalone web pages designed to convert visitors into leads or customers.

• They are used in digital marketing campaigns to drive traffic and increase conversions.

• They have a clear call-to-action (CTA) and are optimized for specific keywords.

• They are often used in conjunction with paid advertising campaigns.

• They can be A/B tested to improve conversion rates.

• Examples include lead generation pages, product pages, and event registration pages.

Three market trends are personalization, sustainability, and e-commerce.

• Personalization: Consumers expect personalized experiences and products tailored to their needs and preferences.

• Sustainability: Consumers are increasingly concerned about the environmental impact of products and are seeking sustainable options.

• E-commerce: Online shopping continues to grow in popularity, with more consumers opting for the convenience of shopping from home.

The struct keyword is used in programming languages to define a user-defined data type that contains multiple variables of different types.

• Structs are used to group related data together.

• They can have different types of variables, including other structs.

• Structs can be used to create complex data structures.

• They are commonly used in object-oriented programming languages.