Form submission handling in React requires preventing the default browser behavior and processing form data with custom logic. As the creator of CoreUI, a widely used open-source UI library, I’ve implemented form submission handling in countless admin forms, login pages, and data entry components. From my expertise, using the onSubmit event with preventDefault() gives you complete control over form processing while maintaining React’s controlled component pattern. This approach enables validation, API calls, and user feedback during the submission process.

Handling multiple form fields efficiently requires a scalable approach that doesn’t create separate state variables for each input. As the creator of CoreUI, a widely used open-source UI library, I’ve built complex forms with dozens of fields in admin panels and user registration components. From my expertise, using a single state object with computed property names is the most maintainable approach for multi-field forms. This method scales well and keeps your component code clean and organized.