“Javascript does stuff, HTML displays stuff. When you want the browser to do things (instead of merely displaying dumbly what it receives) and when these things themselves involve a lot of displaying, you end up writing HTML through Javascript. It’s a little like writing French through English (André went to Marie and said: ”Bonjour! Ça va, ma chérie?”) and just as frustrating, particularly because you sometimes have to narrate whole scenes in French (pidgin tends to be painfully verbose)..