nextjs - 💡(How to fix) Fix duplicate structured data when using dangerouslySetInnerHTML [2 comments, 3 participants]

TL;DR

• The issue can likely be mitigated by ensuring that dangerouslySetInnerHTML is used judiciously and that the structured data is properly sanitized and updated to prevent duplication.

Guidance

• Review the usage of dangerouslySetInnerHTML to ensure it's necessary and used correctly, as it can lead to unexpected behavior, including the duplication of structured data.
• Verify that the structured data is being updated correctly on page refresh and when inspecting the element tab or using plugins, to identify if the issue is related to how the data is being rendered or updated.
• Consider implementing a mechanism to sanitize and deduplicate the structured data before it's rendered, to prevent SEO issues and ensure the expected behavior.
• Inspect the network requests and responses to see if the duplicate structured data is being sent from the server or if it's a client-side issue, to determine the best approach for fixing the problem.

Example

No specific code example can be provided without more context on how dangerouslySetInnerHTML is being used, but ensuring that the content is sanitized and that any scripts or data within it are handled correctly is crucial.

Notes

The provided information lacks specific details on how dangerouslySetInnerHTML is implemented and how the structured data is generated and updated, making it challenging to provide a precise solution. The issue might be related to how Next.js handles server-side rendering (SSR) and static site generation (SSG), and how React updates the DOM.

Recommendation

• Apply workaround: Implementing a sanitization and deduplication mechanism for the structured data seems like the most feasible approach given the current information, as it directly addresses the issue of duplicate data without requiring significant changes to the underlying infrastructure or dependencies.