The answer
No. Mutating props breaks React's one-way data flow and does not behave the way beginners expect. If you need data that changes over time inside a component, that is state, not props.
What Are Props in React and How Do They Work?
Should I mutate props inside a React component?
More FAQs in What Are Props in React and How Do They Work?
Props are inputs passed from a parent component to a child component. They work like function arguments: the parent passes values, and the child receives them as an object and uses them to render.
Yes. A child should never modify its own props. Props flow down from the parent. If data needs to change, the parent updates it and passes new props down. This one-way data flow is core to React.
Anything: strings, numbers, arrays, objects, functions, or even other React elements. Passing functions as props is how a child component communicates events back up to its parent.
Still have questions?
Browse all our FAQs or reach out to our support team
Want to upskill yourself?
Your learning library
Small steps. Big possibilities.
Find your next course. Build something great.