What is JavaScript Rendering?How search engines execute and render JS-driven content for crawling and indexing.Why is JavaScript Rendering important?Key reasons include: Improves crawl and index reliability; Enhances performance and UX; Reduces rendering-related ranking issues.How do I implement JavaScript Rendering?Start with: Prefer server-side or hybrid rendering for key pages; Expose crawlable links and structured data; Avoid blocking scripts necessary for content; Validate with fetching and rendering tools.What are common mistakes with javascript rendering?Common pitfalls include shallow execution, ignoring user intent, over-optimizing for narrow metrics, and failing to maintain consistency at scale.How does javascript rendering affect SEO performance?Done correctly, it can improve relevance signals, sync efficiency, and internal authority flow, contributing to better visibility and engagement.