Technical Definition
JavaScript SEO refers to optimizing JavaScript-heavy websites for search engines. Google can render JavaScript but with limitations: rendering is delayed (two-wave indexing), resource-intensive, and may fail for complex applications. Best practices: server-side rendering (SSR) or static generation for critical content, progressive enhancement, proper handling of internal links, avoiding JS-dependent critical content.
Simple Explanation (ELI13)
JavaScript SEO is about making sure Google can see your content when your website uses a lot of JavaScript. Modern websites often load content with JavaScript after the initial page loads. The problem is Google might not wait for that content, or might not render it correctly. Using server-side rendering helps Google see everything.
Related Terms
Server-Side Rendering, Client-Side Rendering, Rendering, Crawling
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