Use document.hidden instead of document.hasFocus()

[xogo.git] / base_rules.js

diff --git a/base_rules.js b/base_rules.js
index ff698f4..acee324 100644 (file)
--- a/base_rules.js
+++ b/base_rules.js
@@ -2090,9 +2090,9 @@ export default class ChessRules {
       else launchAnimation(); //focused user!
     };
     let boardContainer = document.getElementById("boardContainer");
-    if (!document.hasFocus()) {
-      window.onfocus = () => {
-        window.onfocus = undefined;
+    if (document.hidden) {
+      document.onvisibilitychange = () => {
+        document.onvisibilitychange = undefined;
         checkDisplayThenAnimate();
       };
     }