When you are writing your own custom JavaScript class to plug into uitags. Accepting custom JavaScript classes is uitags' way of making itself extensible.
For example, the <sort /> tag by default uses the JavaScript
class uiSort_OptionComparatorStrategy as its comparator.
You can provide your own comparator strategy by specifying it as a
tag attribute:
<sort comparator="new MyJsComparator();" />
uitags expects the custom MyJsComparator to have
the same public methods as uiSort_OptionComparatorStrategy.
uitags developers use the following naming convention to denote the
scope of a method/variable: