aoqi@0: obj1.valueOf
aoqi@0: obj1 is 1
aoqi@0: obj1.valueOf
aoqi@0: 11
aoqi@0: obj2.valueOf
aoqi@0: obj2 is 2
aoqi@0: obj2.valueOf
aoqi@0: 24
aoqi@0: obj1.valueOf
aoqi@0: obj2.valueOf
aoqi@0: 3
aoqi@0: obj3.toString
aoqi@0: world12
aoqi@0: obj3.toString
aoqi@0: hello world
aoqi@0: obj1.valueOf
aoqi@0: obj3.toString
aoqi@0: 1world
aoqi@0: obj2.valueOf
aoqi@0: obj3.toString
aoqi@0: 2world
aoqi@0: obj3.toString
aoqi@0: obj3.toString
aoqi@0: worldworld