diff --git a/recorder.js b/recorder.js
index ff71bb5..28e26a7 100644
--- a/recorder.js
+++ b/recorder.js
@@ -20,15 +20,18 @@ class Recorder {
         this.textBox = textBox;
         this.id = id;
 
-        this.rendered = -1;
-        this.rendering = false;
         this.atOnce = false;
 
-        this.states = new Array();
-
+        this.clear();
         this.initGraph();
     }
 
+    clear() {
+        this.rendered = -1;
+        this.rendering = false;
+        this.states = new Array();
+    }
+
     renderAtOnce() {
         this.atOnce = true;
         return this;