fix bugs

static/js/index.js

@@ -234,7 +234,11 @@ $(document).ready(function () {
             btn.text(parseFloat(btn.text()) - 1 + 's');
             if (parseFloat(btn.text()) == 0) {
                 stopct();
+                flag_input = true;
                 check();
+                $("#show").show();
+                $(".result").attr("disabled", 'disabled');
+                $("#check").attr("disabled", 'disabled');
             }
         }, 1000);
     }