We have several OOTB task lists that are in use on several subsites. We want to add JavaScript to the NewForm.aspx and EditForm.aspx for these task lists. These lists have not been customized, they are based on the standard Task Content Type.
Since there are several lists already created and in use, it would be far too much work to manually add a Content Editor web part to each page.
We put the JavaScript file in the top-level site style library.
Is there a way to programmatically attach a script reference to each existing page in all the subsites AND have the script reference placed on any NEW list pages created from the OOTB Task content type? Or, add a CEWP to all existing list pages using a feature? I could not find any examples of this.