The things that gave most of javascript quirks were auto comma insertion, this, and global variable declaration. It's the same as how HTML has horrible parts be

The things that gave most of javascript quirks were auto comma insertion, this, and global variable declaration. It's the same as how HTML has horrible parts because from the start it bending backward to be as fault tolerant as implementable. That's why it succeeded and why a strong staticly typed language with very strict error enforcement wouldn't have made it in the first place. Some things are added bits by bits later (e.g modules, strict mode). The rest is a matter of taste and use case: late binding allows different things, all numbers as float is tasteless but it's not handicaping and there are ways around it, syntax is a matter of tooling. I think anyone wanting to write serious applications for a platform should try to be the closer to the native environment, and adding an abstract layer on top of javascript because 'it sucks' feels childish.