I definitely have a very strong love / hate relationship with javascript. On one hand, you can be very expressive with Javascript and it absolutely can be an incredibly flexible language with a lot of power.
On the other hand, there's a LOT of warts in the language. Random reserved words like 'class' that don't even fit the language's approach, variable scoping that can very easily bite you in the ass if you don't know what you're doing, optional line terminators that seemingly exist for no reason other than to create bugs, stuff that should be avoided at all costs like 'with'. And that's just scratching the surface.
Yeah I agree on a lot of the points you mentioned. Block scoping would have been better in my view also. But there are tools, like in other languages, to ease that pain. I never forget a semicolon due to using js2-mode which makes missing semicolons stand out. JSLint and other tools of the sort help find bad code too. And the in browser tools like the Chrome dev tools with a debugger,tracing,console really make it much easier.
Javascript without the tools would be a real pain.
On the other hand, there's a LOT of warts in the language. Random reserved words like 'class' that don't even fit the language's approach, variable scoping that can very easily bite you in the ass if you don't know what you're doing, optional line terminators that seemingly exist for no reason other than to create bugs, stuff that should be avoided at all costs like 'with'. And that's just scratching the surface.