3 ms·

Or use isNaN

• kqr 10y ago
  I'll give you one chance to guess how isNaN is implemented. https://github.com/v8/v8/blob/e6d1a80e790117dc27b20e9b14de4b6ac9f7512f/src/js/macros.py#L90 https://github.com/v8/v8/blob/e6d1a80e790117dc27b20e9b14de4b...