update setting

packages/artplayer/src/player/playbackRateMix.js

@@ -2,40 +2,27 @@ import { errorHandle, def } from '../utils';
 
 export default function playbackRateMix(art) {
     const {
-        template: { $video, $player },
+        template: { $video },
         i18n,
         notice,
     } = art;
 
     def(art, 'playbackRate', {
         get() {
-            return $player.dataset.playbackRate || 1.0;
+            return $video.playbackRate;
         },
         set(rate) {
             if (rate) {
-                if (rate === $player.dataset.playbackRate) return;
+                if (rate === $video.playbackRate) return;
                 const rateList = [0.25, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0];
                 errorHandle(rateList.includes(rate), `'playbackRate' only accept ${rateList.toString()} as parameters`);
                 $video.playbackRate = rate;
-                $player.dataset.playbackRate = rate;
                 notice.show = `${i18n.get('Rate')}: ${rate === 1.0 ? i18n.get('Normal') : `${rate}x`}`;
                 art.emit('playbackRate', rate);
-            } else if (art.playbackRate) {
+            } else {
                 art.playbackRate = 1;
-                delete $player.dataset.playbackRate;
                 art.emit('playbackRate');
             }
         },
     });
-
-    def(art, 'playbackRateReset', {
-        set(value) {
-            if (value) {
-                const { playbackRate } = $player.dataset;
-                if (playbackRate) {
-                    art.playbackRate = Number(playbackRate);
-                }
-            }
-        },
-    });
 }