Input sanitization in ReactJS

It's sanitized by default, you don't need a sanitization method unless you are using dangerouslySetInnerHTML which is not the case.

JSX expressions {} automatically take care of encoding HTML before rendering, which means even if u don't sanitise your input your webpage is XSS safe.

Please refer to this DOC in react site: jsx-prevents-injection-attacks

Note: If you want your user to allow typing in HTML.. then you need input Sanitisation and you have to use dangerouslySetInnerHTML as @dgrijuela mentioned in the above post.