I’ve only tinkered in the world of DOM scripting, but it seems like something every front-end developer should know.
“The skillset of a front end programmer is a three-legged stool: structure (XHTML) is the first leg, presentation (CSS) the second, and behavior (DOM Scripting) the third,” said Peter-Paul Koch, a prominent scripting expert and one of the founders of the task force. “These three legs should be equal, but at the moment the behavior leg is the shortest, least-valued and least-understood of the three, even though the DOM has been a W3C specification for seven years and enjoys relatively solid browser support.”
There you have it folks. And I must agree, my third leg is the shortest.