A quick one, more for my benefit next time I have to set this up in the future. Sometimes, I’m writing some JavaScript that can be divorced from a web page. Maybe it’s a weird bit of code, maybe I’m experimenting with (say) functional programming, maybe it’s just a small self-contained function, but I’d really like to test it right there and then, rather than copy/paste it and use the developer tools in my browser. […]
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