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Javascript is designed to be backwards compatible, always. You can visit a website made 20 years ago and all the APIs it uses will still be there.
by Kaze404 6y ago
Javascript is designed to be backwards compatible, always. You can visit a website made 20 years ago and all the APIs it uses will still be there.
- z3t4 6y agoUnless it uses some IE, Firefox or Chrome specific API. Or standard API's that has been deprecated. API's are constantly being added and removed.
- Kaze404 6y agoWhich APIs that were part of the ECMA standard were removed? As far as I know the only APIs that get removed are the ones that get implemented outside of the standard, and are later deprecated. That's fault of the developer, not of the technology.
- z3t4 6y agoSearching for site: developer.mozilla.org "deprecated" should reveal some deprecated browser API's and JavaScript stuff. I think the Chrome team wait until less then two million sites use something before removing it. For example sync XHR is currently on the deprecation list and will be removed once the usage is low enough. If sync XHR is removed you can no longer sync load modules on the web.