Saves you from asking have you emptied your cache...
Only refreshes browser cache for file if it has been modified..
Resolves Content Delivery Network issues.
Just works — no configuration necessary...
Requires scripts use any of the below functions to load.
Almost all files meet these requirements.
The only case it doesn't account for is when URLs are hard-coded.
This shouldn't ever be done, since it can break sites for other reasons..
Read more
Related items:
