introduce nitro:clear/1

src/nitro.erl

@@ -156,6 +156,9 @@ insert_bottom(Target, Elements) -> insert_bottom('div', Target, Elements).
 insert_before(Target, Elements) -> insert_adjacent(beforebegin,Target, Elements).
 insert_after(Target, Elements) -> insert_adjacent(afterend,Target, Elements).
 
+clear(Target) ->
+    nitro:wire("var x = qi('"++nitro:to_list(Target)++"'); while (x.firstChild) x.removeChild(x.firstChild);").
+
 remove(Target) ->
     nitro:wire("var x=qi('"++nitro:to_list(Target)++"'); x && x.parentNode.removeChild(x);").