Angular · Senior · Question 22 of 75

What does hydration do in an Angular SSR app?

✓Correct answer: Reuses the server-rendered DOM and attaches listeners instead of destroying and re-rendering it
2Re-renders the page from scratch on the client after SSR
3Downloads the HTML again in the background

Explanation

Enabled with provideClientHydration(). Reusing the DOM avoids flicker and improves LCP and CLS. It requires the server and client to produce the same DOM structure.

What does hydration do in an Angular SSR app?

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