modules/admin-full: fix JavaScript issues in live statistics

[project/luci.git] / modules / admin-full / luasrc / view / admin_status / bandwidth.htm

diff --git a/modules/admin-full/luasrc/view/admin_status/bandwidth.htm b/modules/admin-full/luasrc/view/admin_status/bandwidth.htm
index da68373..b8a21bd 100644 (file)
--- a/modules/admin-full/luasrc/view/admin_status/bandwidth.htm
+++ b/modules/admin-full/luasrc/view/admin_status/bandwidth.htm
@@ -188,11 +188,14 @@ $Id$
                                                                continue;
 
                                                        /* normalize difference against time interval */
-                                                       var time_delta = data[i][TIME] - data[i-1][TIME];
-                                                       if (time_delta)
+                                                       if (i > 0)
+                                                       {
+                                                               var time_delta = data[i][TIME] - data[i-1][TIME];
+                                                               if (time_delta)
                                                        {
-                                                               data_rx.push((data[i][RXB] - data[i-1][RXB]) / time_delta);
-                                                               data_tx.push((data[i][TXB] - data[i-1][TXB]) / time_delta);
+                                                                       data_rx.push((data[i][RXB] - data[i-1][RXB]) / time_delta);
+                                                                       data_tx.push((data[i][TXB] - data[i-1][TXB]) / time_delta);
+                                                               }
                                                        }
                                                }