For me, I use JavaScript because it's the closest thing to Write Once, Run Anywhere with no compilation step.
JIT compilation, no build scripts to make things work if you go vanilla.
A homogenous language between the front end and back end reduces context switching and improves my performance.
In recent years it's become a pretty nice language to express yourself in, especially for async code, and its dynamic nature is part of its power, not its pitfall - but it needs embracing, not hiding from.
Massive community support, huge numbers of open-source packages
It's fast enough for every app I've built and you can easily integrate other things if you need to
I say this as someone who comes from a C, C++, and Java background with a decade-long sojourn into C#
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For me, I use JavaScript because it's the closest thing to Write Once, Run Anywhere with no compilation step.
I say this as someone who comes from a C, C++, and Java background with a decade-long sojourn into C#