JavaScript, often abbreviated JS, is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. As of 2022, 98% of websites use JavaScript on the client side for webpage behavior, often incorporating third-party libraries.
JS: Create dynamic and interactive web content.
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For SEO purposes, server-side rendering (SSR) is generally considered better than client-side rendering (CSR). Here are the reasons why:
Search Engine Crawling and Indexing:
SSR: Search engines can easily crawl and index content rendered on the server because the HTML is fully generated before it is sent to the client. This means search engines get a complete page as soon as they request it.
CSR: Content rendered on the client side relies on JavaScript to build the page. While modern search engines can execute JavaScript, there are still limitations and delays. Some content might be missed or take longer to be indexed.
Page Load Speed:
SSR: Pages typically load faster initially because the browser receives fully rendered HTML, improving the user experience and potentially boosting rankings.
CSR: Pages can be slower to load because the browser has to download, parse, and execute JavaScript before rendering the content. This delay can negatively impact user experience and SEO.
User Experience:
SSR: Faster initial page loads and immediate content availability improve user experience, leading to lower bounce rates and higher engagement, which positively influences SEO.
CSR: Slower initial loads due to JavaScript execution can frustrate users, leading to higher bounce rates and lower engagement.
Social Media Sharing:
SSR: Social media platforms can scrape and display content more accurately when it is server-rendered, improving the appearance and effectiveness of shared links.
CSR: Social media scrapers, like search engines, may not execute JavaScript, leading to incomplete or incorrect previews.
However, SSR is not without its challenges:
Complexity: Implementing SSR can be more complex and may require more server resources compared to CSR.
Scalability: SSR can put more load on your servers, potentially impacting performance under high traffic.
To balance the benefits of both, many developers use a hybrid approach, such as Static Site Generation (SSG) or Server-Side Rendering with hydration, where critical parts of the page are rendered on the server, and additional content is loaded dynamically using JavaScript.
For your digital marketing agency and SEO-focused content, SSR or a hybrid approach like Next.js (which supports SSR, SSG, and CSR) would be advantageous.
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