3 ms·
Not necessarily. How old and how backward compatible are you thinking? - Symbol is 2014-2015 - Map is 2014-2015 - Weak* data structures and their methods sp
by dmitriid 4y ago
Not necessarily.
How old and how backward compatible are you thinking?
- Symbol is 2014-2015
- Map is 2014-2015
- Weak* data structures and their methods span 2014-2021
- WebGL 2.0 is 2017-2021
- Custom Elements are 2017-2021
- Chrome-only non-standards (hardware APIs and a bunch of others) are pumped out at a rate of up to 400 per year
- WebAssembly MVP is 2017-2018
And so on. That's off the top of my head. None of them are backwards compatible. Some of them cannot be polyfilled.