1. Allow JS and CSS Retrieval
Allow Googlebot to retrieve your JS and CSS code. This can help get your content indexed more easily. This is more important for your mobile site. Mobile sites typically use external resources such as JS and CSS for helping the search algorithms to understand that the web pages are optimised for mobile.
2. Enable Servers to Handle Crawl
- Who have browsers which are not compatible with certain JS implementations;
- Even for search engines incapable of executing JS.
Many times the script is too complicated arcane for search engines to execute. In such cases, it is not possible to render your pages fully and properly. So make sure that your servers are ready to handle crawl requests.
3. Use Fallback Pages
This is a more traditional strategy but equally important too. The code must be minified whenever it is loaded. This can help improve the page load time. Make sure comments are included in the js file because search engines index them.