fix: Fix fullscreen functionality in mobile.html

docs/uncompiled/artplayer/index.js

@@ -1873,21 +1873,18 @@ function fullscreenMix(art) {
             }
         });
     };
-    const requestFullscreen = $video.requestFullscreen || $video.mozRequestFullScreen || $video.webkitRequestFullscreen || $video.msRequestFullscreen;
-    const exitFullscreen = document.exitFullscreen || document.mozCancelFullScreen || document.webkitExitFullscreen || document.msExitFullscreen;
-    const isFullscreenEnabled = document.fullscreenEnabled || document.webkitFullscreenEnabled || document.mozFullScreenEnabled || document.msFullscreenEnabled || $video.webkitSupportsFullscreen;
     const webkitScreenfull = (art)=>{
         (0, _utils.def)(art, "fullscreen", {
             get () {
-                return document.fullscreenElement || $video.webkitDisplayingFullscreen;
+                return $video.webkitDisplayingFullscreen;
             },
             set (value) {
                 if (value) {
                     art.state = "fullscreen";
-                    requestFullscreen.call($video);
+                    $video.webkitEnterFullscreen();
                     art.emit("fullscreen", true);
                 } else {
-                    exitFullscreen.call(document);
+                    $video.webkitExitFullscreen();
                     art.emit("fullscreen", false);
                 }
                 art.emit("resize");
@@ -1896,7 +1893,7 @@ function fullscreenMix(art) {
     };
     art.once("video:loadedmetadata", ()=>{
         if ((0, _screenfullDefault.default).isEnabled) nativeScreenfull(art);
-        else if (isFullscreenEnabled) webkitScreenfull(art);
+        else if (document.fullscreenEnabled || $video.webkitSupportsFullscreen) webkitScreenfull(art);
         else (0, _utils.def)(art, "fullscreen", {
             get () {
                 return false;