@drchaos @tthbaltazar @julya @n0toose That is my experience.
The small amount of German I learned at school helped me learn Dutch as an adult and then both of those languages together with English made it easier for me to learn Norwegian.
My current level of Norwegian allows me to read both modern Bokmål and Nynorsk written dialects and also older forms of written Norwegian.
Plus allowing me to read and understand a most written Danish or Swedish that I encounter in my daily life.
Now that you mention it, JavaScript does feel very European.