What displays if the user doesn't have JavaScript?

System

Default content. Default content comes from what is inside the span tags of the module code in the template. This should be the content that you would serve had you not been running the experiment. In almost all cases, this would be the same content as the control/benchmark that is part of the experiment.
To understand what your default content is specifically, you can go to the test page itself and append “sticky=x” where “x” is an invalid creative number (in other words, one that is not being served). Ensure that what renders in this case is acceptable content, in the event – for example, a user did not have JavaScript enabled. If you have any doubts, please consult with the Technical Consultant that set up the template for the experiment.