Here are some of the main on-page elements that affect search engine optimization:
- Page load times
- Rendered content
- Lazy-loading images
- Drop-down menus
- Fly-out menus
- Dynamic content
- Interactive elements
Here are the three main steps on how Google handles a webpage and how it processes JS:
- Crawling: First, the Googlebot crawls the URLs for every web page. It makes a request to the server, and the server sends the HTML document.
- Rendering: Googlebot then decides what is necessary to render the main content.
- Indexing: After it has identified what is necessary to render the content, Googlebot can then index the HTML.
- Content duplication: This can occur when the same content is being rendered by both the server-side and client-side code. This can lead to duplicate content being indexed by search engines, which can lead to a penalty. It’s critical to ensure that the content is unique and that there is no duplication.
- Crawlability: Search engine crawlers need to be able to access the source code of a website to index it. If the code is written in such a way that crawlers cannot access it, then the website may not be indexed. This can result in poor rankings and can prevent the website from appearing in organic search results.
- Code properly formatted
- Unnecessary characters removed
- External scripts should be properly linked
- Minimize the amount of JS used
To prevent content duplication, webmasters should ensure that each page is served with a unique URL and that dynamic loading is used sparingly.
Sometimes, content duplication can also be caused by third-party services. When a website uses external scripts, such as social media widgets, they can cause the same content to be loaded multiple times.
Slow Loading Speeds
There are a few common ways to address slow speeds. They include:
- Use the latest version of the language (as well as any additional libraries that may be needed)
- Separate code into small, manageable chunks, and use appropriate naming conventions
- You should also use variable names that are relevant to the code they’re used in. This can help reduce clutter and allow for easier navigation