2010 02 26 implicit tostring fun
Be careful with those implicit .toString() calls in == comparisons.
typeof "abc" == "string" // true
typeof String("abc") == "string" // true
String("abc") == "abc" // true -- same types get casted to equal each other
Also, instantiation via the new operator can yield interesting results!
String("abc") instanceof String // false -- hmmm...
(new String("abc")) instanceof String // true
String("abc") == (new String("abc")) // true -- wait, wtf?
As always, we are reminded to test with the strict equality operator: ===.