Update ji.html

Author: Thevitebsk

jive/ji.html

@@ -17,6 +17,8 @@
       out += "["+s+"]"
     } else if (code[p] == "[") {
     while (code[p] !== "]") {p++}
+    } else if (code[p] == "!") {
+      s.push(fact(s.pop()))
     } ; p++
   }
   //output the out variable