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Note that HTML allows you to avoid quoting parameters to make them easier to type: <html lang=en class=no-js> This is a feature React lacks.

• xixixao 5y ago
  In JSX it wouldn’t be obvious whether “en” is a variable/literal or a string.
  • postalrat 5y ago
    It's always a string unless it's in a {} pair. So if < lang=en > it would always be a string.