While the survey didn't push the demographics angle very deep (there were no questions about gender or location), it did reveal a few interesting facts about a developer's most important characteristic: their favorite text editor.
Years of Experience
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The surprise here is the lack of surprise: the experience distribution is almost identical to the Stack Overflow developer survey.
It turns out JavaScript programmers are not all inexperienced jQuery-wielding junior devs. Who knew!
Yearly Salary
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While salary by itself does not tell us a whole lot (since it's very dependent on your location), these results match up fairly reasonably with a mostly North American and Europe-centric audience.
Favorite Text Editor
Sublime Text and Atom are still rule the roost, but the interesting entrant here for me is VS Code.
For a long time, Microsoft was seen as a negative force in the JavaScript ecosystem, dragging us all down with its antiquated browsers. But over the past couple years, the company has shown that it's serious about making up for past faults with well-received initiatives such as TypeScript and VS Code.