Currently Javascript resources can be (1) put directly in the HTML page 'manually', (2) put in a script tag in the GWT manifest or (3) put in a ClientBundle as a TextResource and then injected into the DOM. I believe the last is a good option for many scenarios, particularly dynamic includes; it also avoids a network round-trip.
I wrote a simple wrapper for this third option; it adds a method ensureInjected() just like CssResource. This also allows for additional Javascript-specific features: e.g. it calls the Closure minifier (in 'simple' mode) to automatically minify the Javascript. The code is on github here: https://github.com/fathomdb/gwt-utils/commit/5b504b98b29ba27e0826f61cc128ae66e61458fb I have a few TODOs in there: not always calling the minifier, support for external resources, and combination of multiple external scripts (c.f. images bundled into a sprite). I already find this useful as-is; would others? Should I try to contribute this to GWT? Justin -- http://groups.google.com/group/Google-Web-Toolkit-Contributors
