number or boolean string to use. Valid values of 0, 1, "0", "1", "true", "false"
Set to allowNumericBooleanValues.yes if a true/false value can be a numeric 0 or 1
true if the value is a boolean false otherwise.
assert("0".isBoolean == true); assert("1".isBoolean == true); assert("2".isBoolean == false); assert("true".isBoolean == true); assert("false".isBoolean == true); assert("trues".isBoolean == false); assert("0".isBoolean(AllowNumericBooleanValues.no) == false); assert("1".isBoolean(AllowNumericBooleanValues.no) == false); assert(0.isBoolean == true); assert(1.isBoolean == true); assert(2.isBoolean == false);
Determines if a value is of type boolean using 0, 1, true and false as qualifiers.