KITFORMA · EDITORIAL GUIDE
How do I fix an uncontrolled-to-controlled React input warning?
KitForma editorial guide. A text input switches mode if value starts undefined and later becomes a string.
Step-by-step guidance
A text input switches mode if value starts undefined and later becomes a string. Initialize with
useState("") or render value={name ?? ""} with an onChange that stores the string. For checkboxes use checked and a boolean, not value as checked state. Test the loading and loaded renders. Use defaultValue only when the DOM should own subsequent edits; changing it is not a controlled update.Sources and verification
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