If I add angular material directive md-button like this:
angular.element( document.body ).append( '<md-button> Material' )
It doesn't acknowledge that this is an angular directive. The question is how to recompile a region / element
Not sure if you should be doing this, but the correct way is to use a function $compile :
$compile
angular.element(document.body).append($compile('<md-button> Material')($scope))
The plunker works .