How do you show the submit button only on the last step in a multi-step form?
Check if currentStep === steps.length - 1. If so, show the submit button and hide the next button. Otherwise, show the next button and hide the submit button. Update this in the renderStep function.
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More FAQs in Building a Tab Form Component: A Complete Guide
Define steps as an array of field configs. Store all form data in a single object (persists across tabs). Render the current step's fields. Validate before proceeding to the next step. Show prev/next buttons and a submit button on the last step.
Before allowing the user to proceed, check all required fields in the current step: steps[currentStep].fields.every(field => !field.required || formData[field.name]). If validation fails, show an error and prevent navigation.
Store all data in a single object: const formData = { name: '', email: '', address: '' }. Update on every input change: formData[field.name] = value. The data persists because the object is in the outer scope, not re-created on each step.
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