Simple macro:

(Check to make sure that links contain employee number)

Using dojoAttachEvent, dojoAttachPoint

Extending another widget

HideButton2 extends HideButton (above) and changes the template (but keeps the onclick handler).

Something more complicated:

thinger blah stuff blah

 

25%

baz thud (modified by dojo/connect event=startup)

thinger blah stuff thinger

 

37%

baz thud (modified by dojo/connect event=startup)