Strict equality (===) - Loose equality (==)

 Operand B
  UndefinedNullNumberStringBooleanObject
Operand AUndefinedtruetruefalsefalsefalsefalse
Nulltruetruefalsefalsefalsefalse
NumberfalsefalseA === BA === ToNumber(B)A === ToNumber(B)A == ToPrimitive(B)
StringfalsefalseToNumber(A) === BA === BToNumber(A) === ToNumber(B)A == ToPrimitive(B)
BooleanfalsefalseToNumber(A) === BToNumber(A) === ToNumber(B)A === BToNumber(A) == ToPrimitive(B)
ObjectfalsefalseToPrimitive(A) == BToPrimitive(A) == BToPrimitive(A) == ToNumber(B)A === B

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