Considering the use of JavaScript on your website and about mitigating performance issues.
Byte for byte, no resource affects page speed more than JavaScript. JavaScript affects network performance, CPU processing time, memory usage, and overall user experience. Inefficient scripts can slow down your website, making it less responsive and more frustrating for users. Furthermore, while images and video account for over 70% of the bytes downloaded for the average website, JavaScript has a greater potential for negative performance impact, can significantly impact download times, rendering performance, and CPU and battery usage.
Optimizing JavaScript performance is essential for delivering fast, responsive, and efficient web applications. By following best practices, leveraging modern tools, and incorporating advanced techniques, developers can significantly improve JavaScript performance.