js falsyな値#
false#
var bNoParam = Boolean();
var bFalse = Boolean(false);
var bNull = Boolean(null);
var bUndefined = Boolean(undefined);
var bUndefined = Boolean(NaN);
var bEmptyString = Boolean('');
var bZero = Boolean(0);
true#
var btrue = Boolean(true);
var btrueString = Boolean('true');
var bfalseString = Boolean('false');
var bSuLin = Boolean('Su Lin');
var bArrayProto = Boolean(100);
var bArrayProto = Boolean([]);
var bObjProto = Boolean({});