What is AJAX?
What is DOM?
The DOM stands for document object model which is created to determine the structure of the page. The Dom Defines all the objects, properties, methods and events of HTML elements of the site. The DOM is created by parsing of information and resources from the HTML documents. Tip: When you inspect an element in a webpage then you can see DOM.
The headless browsing helps you to know how well your site works without UI. The headless browsers are used by testers to check the website. Even search engines use headless browsing to know more about a site or a mobile app.
- Crawlability of the website by bots.
- Bots ability to access your site content.
- Critical path rendering.
The crawlability of the website determines how well a website is understood by the search engines. You can prevent crawlers from your site using robotic txt file, HTTP header status and robots meta tag.
The Lone Slash:
The lone slash is not crawlable and using in the URL is not recommended by Google. Commonly, the slash is used to jump to a portion of the content.
The hash fragments are used to move in the static HTML document. There is no need for an HTTP request while using hash fragments. Escaped Fragment: The URL uses escaped fragment to indicate a jump in the content and also called ugly URL Original Experience: The URL has either # or ! to indicate escaped fragment in the page.
Pushstate History API:
The pushstate History API is a navigation based API which uses infinite scrolling without HTML request. The URL in the page is updated when the user scrolls down and it is supported by Google. In this page, the back button is used to move pages inside the site.
- Search engines and browsers cannot find errors in the JS.
- Providing Google with the same experience as the user helps your SEO.
How to Make sure Google Gets your Content?
- Test a subset of the page to know whether Google can index your content (bullet testing).
- Fetch as Google helps you to know whether your content is indexed.
- Og tags and summary cards also help you to know about your meta content.
The Html snapshots are nothing but a fully rendered page that can be sent to search engines. But, Html has provided with a chance of cloaking. Site Latency: The time taken by the site to load the content of the page which should be less than 5s. The critical render path is loading content which is necessary while the rest of the content after 5 seconds. Perceived Latency: When you have render blocking JS in your site then, it is called perceived latency. It takes more time to load a site than usual.
What To Do When You Have Render Blocking JS?
- Adding JS in HTML document.
- Adding async tag in the HTML attribute.
- By placing JS lower within the HTML documents.
Conclusion: It is important for an SEO companies to learn about JS to increase the site speed as well as to provide a good user experience. By learning JS, one can improve the overall performance of the site and find errors in the site. I hope this article is useful to you. Thanks.