What is the impact of JavaScript on website performance?
JavaScript can significantly affect website performance. While it enables dynamic content and interactivity, excessive or poorly optimized JavaScript can lead to slower load times and a less responsive user experience.
How can I optimize JavaScript for better performance?
You can optimize JavaScript by minimizing file sizes, using asynchronous loading, and reducing the number of DOM manipulations. Tools like minifiers and bundlers can also help.
Are there any tools to measure JavaScript performance?
Yes, tools like Google Lighthouse, WebPageTest, and Chrome DevTools can help you analyze and measure JavaScript performance on your website.
What are the common pitfalls to avoid with JavaScript?
Common pitfalls include blocking the main thread, not using caching effectively, and failing to defer or async load scripts. These can all lead to performance issues.
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