Greenovative Energy Angular Frontend Developer Interview Questions and Answers

Q1. All the basic angular questions asked, routing, how to pass data from one component to another components
Add your answer
Q2. What is the difference between Observable and promise
Ans. 
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 w...read more
Answered by AI
Add your answer
Q3. How to share I'd using route
Ans. 
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
Answered by AI
Add your answer
Q4. Input and output in angular
Ans. 
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:
Answered by AI
Add your answer
Q5. What is data binding in angular
Ans. 
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 eleme...read more
Answered by AI
Add your answer
Q6. Hook life cycle in angular
Ans. 
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

• n...read more
Answered by AI
Add your answer

They given me one assignment task where I had to show all users detail in the table using angular material. They provided me CRUD API link and I submitted it in few hours and got selected.

Q1. Salary discussion and previous organisation project details.
Add your answer