1. Use clean, structured code: Search engines can have a hard time indexing websites that use messy or unorganized JavaScript code. Keep your code clean and simple, use indentation and comments for better readability and understandability.
1. Avoid unnecessary JavaScript: Unnecessary JavaScript can slow down your website, which can harm your rankings in search results. Therefore, use only what is necessary for its functionality and remove all redundant or unwanted JavaScript.
1. Minimize the use of AJAX: While AJAX may make a website more dynamic and user-friendly, it can also complicate things for search engine crawlers as they cannot easily interpret AJAX-generated content. So, use sparingly or provide alternative content.
1. Inline critical JS: You should inline the JavaScript code needed for initial render and use async or defer attributes to delay the execution of the non-critical JS until after the first render.
1. Use HTML5 tags: Using HTML5 tags like section, article, header, footer etc., can make it easier for search engine crawlers to understand your content and index your site higher.
1. SEO-friendly URL: Use JavaScript to generate user-friendly and SEO-friendly URL.
1. Minify and Compress: Use JavaScript minification tools like UglifyJS or Google Closure Compiler to decrease the size of your JavaScript files and compression tools like Gzip to reduce their transfer size.
1. Progressive Enhancement: Basically, build your website so that its basic functionality and content is accessible without JavaScript. Then, use JavaScript to enhance the experience for users who do have JavaScript enabled.
1. Server-Side Rendering (SSR): This technique is used to convert a client side JavaScript application into a server side application. This is beneficial for SEO as it allows search engines to crawl your site for content and index it.
1. Use schema markup: Schema is a type of microdata that helps search engines better understand the data and its context on your web pages. This can result in more detailed and informative search result listings.
1. Use frameworks and libraries that are search engine friendly: React, AngularJS, and Vue.js are all designed in such a way that they can be effectively crawled by search engines.
