What are the best practices for async loading in web development?
Some best practices include using the async
and defer
attributes, optimizing resource loading, and prioritizing critical resources.
Can you explain the difference between async
and defer
?
Sure! async
loads the script asynchronously and executes it as soon as it's downloaded, while defer
ensures the script is executed after the document has been fully parsed.
How can I optimize resource loading for better performance?
You can optimize resource loading by minimizing file sizes, using CDNs, and implementing lazy loading for images and videos.
Are there any tools to help with async loading?
Yes, tools like WebPageTest, Lighthouse, and Chrome DevTools can help analyze and improve async loading performance.
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