判断控制器是否可用

src/controls/index.js

@@ -15,8 +15,14 @@ export default class Controls {
   constructor(art) {
     this.art = art;
     this.$map = {};
-    this.init();
-    this.mount();
+    this.isVideoCanplay = false;
+    this.art.on('video:canplay', () => {
+      if (!this.isVideoCanplay) {
+        this.isVideoCanplay = true;
+        this.init();
+        this.mount();
+      }
+    });
   }
 
   init() {