Question

What is the purpose of the ngOnInit method in Angular?

a) To handle dependency injection
b) To initialize the component's properties
c) To respond to content changes
d) To perform operations before Angular displays data-bound properties

Answer 1

The ngOnInit method in Angular is used to initialize the component's properties.

Step-by-step explanation:

The purpose of the ngOnInit method in Angular is to initialize the component's properties. This method is called only once after the component is created and before it is displayed. It is commonly used to perform operations such as initializing variables and making API calls to fetch data.

For example, if we have a component that needs to fetch data from a server when it is first displayed, we can use the ngOnInit method to make the API call. Once the data is fetched, we can assign it to the component's properties and use it in the template.

So, the correct option is b) To initialize the component's properties.