Reducing unused JavaScript is an important optimization technique to improve the performance of a website or application. Here are some tips to reduce unused JavaScript:
- Use a build tool: Use a build tool like webpack or gulp to bundle and minify your JavaScript files. This will help to reduce the size of your code and remove any unused code.
- Remove unused code manually: Go through your JavaScript code manually and remove any code that is not being used. This will help to reduce the size of your code and make it easier to maintain.
- Use code splitting:This can help to reduce the size of your code and improve the load time of your website or application.
- Use tree shaking: Use tree shaking to remove any extra code from your JavaScript files. Tree shaking is a way that analyzes your code and removes any code that is not being used.
- Use lazy loading: Use lazy loading to load JavaScript files only when they are needed. This can help to reduce the size of your code and improve the load time of your website or application.
- Use a content delivery network (CDN): Use a CDN to deliver your JavaScript files. This can help to improve the load time of your website or application by delivering the files from a server that is closer to the user.
By following these tips, you can reduce unused JavaScript and improve the performance of your website or you can speed up your website.
