Vue JS Project Components 3

Question 1

How do you pass data from a parent to a child component?

Accepted Answer

Through props

Answer

Props are the mechanism for passing data downward from parent to child.

Question 2

Which option declares the events a component can emit?

Accepted Answer

emits

Answer

The emits option documents and validates the custom events a component fires.

Question 3

What is the purpose of a slot in a component?

Accepted Answer

To let parents inject custom content into the child

Answer

Slots provide a placeholder where the parent can pass in template content.

Question 4

How does a child notify its parent that something happened?

Accepted Answer

By calling $emit with an event name

Answer

Children use $emit to fire events that parents listen for with v-on.

Question 5

What is a named slot used for?

Accepted Answer

Targeting specific outlets when a component has multiple slots

Answer

Named slots let a component expose multiple distinct content outlets identified by name.

Vue JS Practice Test