Question

I’ve searched, but didn’t find answer to this question. Should HTML DOM EVENTS, like onChange, onSelect, onKeyUp, onFocus, onClick etc. contain semicolon, example two lines below.

onChange="this.form.submit();" OR onChange="this.form.submit()"

"YES" or "NO" or "Doesn’t Matter"

I guess it doesn’t matter, but again, what’s the best, most right to do?

Answer 1

It doesn’t matter.

The event handler attribute value is treated as a series of statements which are wrapped in a function signature similar to

 function (event) {
   with (event.target.ownerDocument) {
     with (event.target) {
       // attribute body goes here
     }
   }
 }

so you can put any group of SourceElements in the attribute value, and can leave off semicolons as per JavaScript’s usual semicolon insertion rules.