Sure, and the browsers that stray further off will get used less and die off. And if you are using the latest and "greatest" JS features, you have to expect th

Sure, and the browsers that stray further off will get used less and die off. And if you are using the latest and "greatest" JS features, you have to expect the failures that happen. If you enjoy sitting on the bleeding edge, don't complain about getting cut. If you implement features using known, simple and stable tech, things will generally work great without needing to worry about special cases.