ReactJS Props Validation
Props are an important mechanism for passing the read-only attributes to React components. The props are usually required to use correctly in the component. If it is not used correctly, the components may not behave as expected. Hence, it is required to use props validation in improving react components.
Props validation is a tool that will help the developers to avoid future bugs and problems. It is a useful way to force the correct usage of your components. It makes your code more readable. React components used special property PropTypes that help you to catch bugs by validating data types of values passed through props. Although, it is not necessary to define components with propTypes. But if you use propTypes with your components, it helps you to avoid unexpected bugs.
ReactJS Props Validator
ReactJS props validator contains the following list of validators.
Here, we are creating an App component which contains all the props that we need. In this example, App.propTypes is used for props validation. For props validation, you must have to add this line: import PropTypes from 'prop-types' in App.js file.
ReactJS Custom Validators
ReactJS allows creating a custom validation function to perform custom validation. To create a custom validation function, the following argument must be required.
props: It should be the first argument in the component.
propName: It is the propName that is going to validate.
componentName: It is the componentName that are going to validated again.