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Understanding Hydration Errors by building a SSR React Project
- Hydration errors occur when the HTML rendered by a server doesn't match the structure expected by React during client-side hydration.
- Server-Side Rendering (SSR) involves the server rendering the HTML before sending it to the client.
- SSR applications were often used with template engines like Jinja, Handlebars, etc., whereas Client-Side Rendering (CSR) relies on rendering in the browser using JavaScript.
- Hydration errors can cause discrepancies between server-rendered HTML and client-side functionality, like event handling.
- To fix hydration errors, ensure consistency between server and client rendering, such as matching props and content.
- React's hydrateRoot function enables rendering React components on top of server-rendered HTML on the client side.
- Nested p tags, rendering timestamps, and browser-specific APIs can lead to hydration errors.
- Fixing hydration errors involves adapting code to ensure the client and server rendering align properly.
- React may tear down and recreate components with mismatches to ensure correctness, potentially impacting performance.
- Understanding and addressing hydration errors is crucial for maintaining a seamless and consistent user experience in React SSR projects.
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