A quick, 5-minute video explaining the JavaScript portions of Gary Bernhardt's infamous "Wat" talk.

For bonus points (after watching the video)

When Gary gave this talk, jsc was the go-to JavaScript REPL, and it's still made available on off-the-shelf Macs. That said, Node has become pervasive, and I'd argue more web developers today would jump to node to give a talk like this before jsc. That said, you cannot replicate Gary's middle slide (the second I examine) with node:

> [] + []
''
> [] + {}
'[object Object]'
> {} + []
0
> {} + {}
'[object Object][object Object]'

What changed?

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