Question

What is the purpose of adding hooks to a component in Angular?

a) To initialize the component
b) To unsubscribe observables
c) To create new objects
d) To render the component

Answer 1

Hooks in Angular, such as OnInit, are lifecycle hooks used primarily to initialize components at different stages in their lifecycle, although they may indirectly involve observables or affect rendering.

Step-by-step explanation:

Adding hooks to a component in Angular serves multiple purposes, depending on the specific hook used.

The correct answer to the question would be a) To initialize the component. Hooks such as OnInit are lifecycle hooks that allow developers to tap into the lifecycle of Angular components and directives at different points in their creation, update, and destruction. For example, the OnInit hook is invoked when Angular initializes the component after displaying the first properties. This hook is ideal for initializing data in a component.

There are also other hooks like OnDestroy, which can be used for unsubscribing from observables to prevent memory leaks, but this is not their primary purpose. Hooks do not directly create new objects or render components, but they can be involved in these processes indirectly through their lifecycle operations.