Explica este código JavaScript
console.log(typeof null == 'object'); // ?
A. true
B. false
C. TypeError
D. undefined
Respuesta en el primer comentario.
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Top comments (2)
Respuesta:
A.
truePese a que
nulles un primitivo, debido a un bug del lenguaje su tipo de dato esobject.Este bug es muy antiguo y se determino que no vale la pena arreglarlo al día de hoy ya que se pueden romper muchos programas que pueden depender de esta error.
Más info:
Este bug es bastante conocido en programadores experimentados y usado en entrevistas laborales para estimar tu conocimiento del lenguaje.
No usar comparaciones sin === y tirando.