Vim has excellent commands for changing the contents of parentheses (ci(), brackets (ci[), and squiggly braces (ci{) (as well as single quotes, double quotes, backticks, etc.). But what about tags?
Place your cursor anywhere inside the tags, type cit in Visual mode, and this:
<div>Begone</div>Becomes:
<div></div>d works too, but I prefer c because it puts you in Insert mode at the end of the opening tag, ready to type.
Check out :h v_it for more information.
h/t Josh Branchaud