Why is ( Infinity | 0 ) === 0?

javascript bit-manipulation bitwise-operators infinity bitwise-or

Bitwise operators work on integers only.
Infinity is a floating-point value, not an integer.

The spec says that all operands of bitwise operations are converted to integers (using the ToInt32 operation) before performing the operation.

If number is NaN, +0, −0, +∞ or –∞ return +0.

javascript bit-manipulation bitwise-operators infinity bitwise-or

Doing math and other operations that expect integers with NaN and Infinity is usually a bad idea. How would you set/clear a bit from Infinity?

Actually, bit-wise operations are only defined for integers - and integers do not have NaN or Infinity.

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