No-Library (pure JS), HTML, CSS, JavaScript
JFF SO66720667
Recursive text highlighter for selective elements
Change style rules in a style sheet (also pseudo element styles)
The Popup utility of the JQuery Alike (JQL) module
Using elemProxy
Title said it
See https://stackoverflow.com/questions/65004812/javascript-add-and-remove-classname-keep-setting/65005038#65005038
A factory to create a handy flagged enum
See: http://stackoverflow.com/questions/10151216/javascript-cloned-object-looses-its-prototype-functions
https://codereview.stackexchange.com/questions/242622/filtering-and-adding-additional-properties-to-array-of-objects
populate selector dependent on choice of other selector using option grouping (less looping)