What are some examples of prop validation in React?
In React, prop validation is done using PropTypes. For example, you can define a component like this:
import PropTypes from 'prop-types';
const MyComponent = ({ name, age }) => {
return <div>{name} is {age} years old.</div>;
};
MyComponent.propTypes = {
name: PropTypes.string.isRequired,
age: PropTypes.number
};
This ensures that name
is a required string and age
is a number.
Can you give me another example?
Sure! Here's another example:
const UserProfile = ({ user }) => {
return <div>{user.name} - {user.email}</div>;
};
UserProfile.propTypes = {
user: PropTypes.shape({
name: PropTypes.string.isRequired,
email: PropTypes.string.isRequired
}).isRequired
};
This validates that user
is an object with required name
and email
properties.
What happens if the prop validation fails?
If prop validation fails, React will log a warning in the console during development. It helps catch bugs early by ensuring that components receive the correct data types.
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