alert is not defined

[grosser]

just tried to use it, but only got
xpath failure: ReferenceError: alert is not defined
WARNIING: [Thu Mar 25 2010 15:19:48 GMT+0100 (CET)] {ENVJS} could not load script http://example.com/javascripts/scriptaculous.js?1269513576: alert is not defined
ERROR: [Thu Mar 25 2010 15:19:49 GMT+0100 (CET)] {ENVJS} error evaluating script:

[smparkes]

This is actually an env-js issue (which I also support). Looks like our xpath engine doesn't have everything that prototype wants. We are looking at another engine or might be able to implement the pieces missing ... but I'm not sure when.

The workaound for now is disable xpath before loading prototype with something like

if (this.Envjs) { window.evaluate = undefined; }

[smparkes]

Oh, and by the way, the "alert" not defined is a bug that I'll check in a fix soon, but it was just hiding the real issue.

[smparkes]

Actually, the capybara driver needs access to xpath, so I'm pretty sure you'll need to save the reference and restore it, something like

var saved_evaluate = window.evaluate;
if (this.Envjs) { window.evaluate = undefined; }
include prototype
if (this.Envjs) { window.evaluate = saved_evaluate; }

Kind of a pain ... sorry 'bout that. xpath is ... painful. Can't really fault prototype for trying to figure out if the xpath it has access to is working.

[Papipo]

I used this same fix to handle google dfp ads. loading the main script broke my tests.