The author of this quiz could have made this a great learning opportunity by linking to the appropriate sections in ECMA-262[0]. For example, question 15 makes

The author of this quiz could have made this a great learning opportunity by linking to the appropriate sections in ECMA-262[0]. For example, question 15 makes a lot more sense when you read "ToBoolean" (Sec 9.2) which shows that all objects (including arrays) are always considered truthy values, however when compared with ==, "The Abstract Equality Comparison Algorithm" (11.9.3) is used, which gives this behavior: >> [0] == [0] false >> a = [0]; a == a true because a shallow comparison is used. [0] http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf http://www.ecma-international.org/publications/files/ECMA-ST...