visualize.js - change datasource at runtime

I've got a situation where I want to run one report with different data sources based on environment/context. For example, when in development, we want to tell visualize.js to access data in the development environment; when in production, we should pass in the production datasource. This was possible using the JRViewer; how do I do it with visualize.js? Thanks in-advance for any suggestions. -Ben