viewer,timer: replace deprecated substr

2 files changed, 2 insertions, 2 deletions

diff --git a/beamer/viewer/screen/timer.js b/beamer/viewer/screen/timer.js
index 112a421..0f5d9bc 100644
--- a/beamer/viewer/screen/timer.js
+++ b/beamer/viewer/screen/timer.js
@@ -78,7 +78,7 @@ class Timer {
   _setDisplay(seconds) {
     const dateObj = new Date(null);
     dateObj.setSeconds(seconds);
-    this.display.textContent = dateObj.toISOString().substr(11, 8);
+    this.display.textContent = dateObj.toISOString().slice(11, 11+8);
   }
 
   _toggleDisplay(active) {
diff --git a/beamer/viewer/viewer.js b/beamer/viewer/viewer.js
index 28c0187..d8d7668 100644
--- a/beamer/viewer/viewer.js
+++ b/beamer/viewer/viewer.js
@@ -107,7 +107,7 @@ class Viewer {
 
   _hash_params() {
     const queryDict = {};
-    location.hash.substr(1).split("&").forEach(item => {
+    location.hash.slice(1).split("&").forEach(item => {
       const pair = item.split("=");
       queryDict[pair[0]] = pair[1];
     });