How do you validate steps in a React multi-step form?
Write a validateStep function that checks all required fields in the current step: steps[currentStep].fields.every(field => !field.required || formData[field.name]). Call it before next and submit. Show an alert if validation fails.
Verify This Answer
Cross-check this information using these trusted sources:
More FAQs in Tab Form Component in React
Use useState for currentStep and formData. Define steps as an array of field configs. Render the current step's fields. Validate before next. handleChange updates formData with spread: setFormData(prev => ({ ...prev, [name]: value })).
Use useState with an object: const [formData, setFormData] = useState({}). Update with spread: setFormData(prev => ({ ...prev, [name]: value })). This preserves existing data while adding/updating the changed field.
Allow going back freely: onClick={() => i < currentStep && setCurrentStep(i)}. For going forward, require validation (call next() which validates). This prevents users from jumping to unvalidated steps.
Still have questions?
Browse all our FAQs or reach out to our support team