Has Emmet a syntax for adding
The general syntax for adding an attribute to an element in Emmet is:
So in this case, it'd be:
That said, if you just do
a by itself, it should automatically jump the editor cursor into the
href attribute, and you can do
a:link to pre-populate it with a
http://. So those options might be faster/more to your tastes.
For more information, look at the Emmet Cheat Sheet - it lists all the syntax that's available.