On: JavaScript Is Weird

[qayxc]

I would agree if wasn't for the fact that JS is a dynamically typed language.

You can (and sometimes will) run into instances of this without noticing, because while you won't explicitly write

  true++

you might do something like

  x = someFunction()
  x++

not realising that someFunction() might return a boolean under some circumstances.

Anyone who worked with a sufficiently large JS codebase ran into one of these cases and got unexpected results at some point due to this.

[wruza → qayxc]

true++ and x++ are syntactically different though. The latter is a post-increment of an identifier, and the former is a post-increment of a boolean literal. Different rules may apply to these cases.

[davidkunz → qayxc]

This is true, one must always make sure to handle all possible return types, but that's true for all dynamic languages.