aoqi@0: hello
aoqi@0: hello
aoqi@0: hello
aoqi@0: TypeError:1:read property "foo" from undefined
aoqi@0: TypeError:1:read property "foo" from undefined
aoqi@0: TypeError:1:read property "foo" from undefined
aoqi@0: TypeError:1:read property "foo" from undefined
aoqi@0: TypeError:1:read property "foo" from undefined
aoqi@0: TypeError:1:read property "foo" from undefined