dispose方法添加判断container是否存在

Game.vue

@@ -47,7 +47,7 @@ export default {
     dispose() {
       this.game.dispose();
       const container = document.getElementById("gameContainer");
-      container.innerHTML = "";
+      container && (container.innerHTML = "");
     },
     reload(name) {
       this.game = new games[name]({

package-lock.json

@@ -0,0 +1,69 @@
+{
+  "name": "qmgame",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "@tweenjs/tween.js": {
+      "version": "18.6.4",
+      "resolved": "https://registry.npm.taobao.org/@tweenjs/tween.js/download/@tweenjs/tween.js-18.6.4.tgz",
+      "integrity": "sha1-QKPQqTZHEkhy3sjg/RvVkmaVtso="
+    },
+    "createjs": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npm.taobao.org/createjs/download/createjs-1.0.1.tgz",
+      "integrity": "sha1-Fj6Lo1gU9iyAM82WKAM/GQ39qp8="
+    },
+    "eventemitter3": {
+      "version": "4.0.7",
+      "resolved": "https://registry.npm.taobao.org/eventemitter3/download/eventemitter3-4.0.7.tgz",
+      "integrity": "sha1-Lem2j2Uo1WRO9cWVJqG0oHMGFp8="
+    },
+    "inherits": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npm.taobao.org/inherits/download/inherits-2.0.3.tgz",
+      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
+    },
+    "matter-js": {
+      "version": "0.14.2",
+      "resolved": "https://registry.npm.taobao.org/matter-js/download/matter-js-0.14.2.tgz",
+      "integrity": "sha1-gWmvngb9w1a6nnK0liTrMpg5iDs="
+    },
+    "path": {
+      "version": "0.12.7",
+      "resolved": "https://registry.npm.taobao.org/path/download/path-0.12.7.tgz",
+      "integrity": "sha1-1NwqUGxM4hl+tIHr/NWzbAFAsQ8=",
+      "requires": {
+        "process": "^0.11.1",
+        "util": "^0.10.3"
+      }
+    },
+    "phaser": {
+      "version": "3.54.0",
+      "resolved": "https://registry.npm.taobao.org/phaser/download/phaser-3.54.0.tgz",
+      "integrity": "sha1-RrGR5GBZqrKppX94UlxgtZV2fu4=",
+      "requires": {
+        "eventemitter3": "^4.0.7",
+        "path": "^0.12.7"
+      }
+    },
+    "process": {
+      "version": "0.11.10",
+      "resolved": "https://registry.npm.taobao.org/process/download/process-0.11.10.tgz",
+      "integrity": "sha1-czIwDoQBYb2j5podHZGn1LwW8YI="
+    },
+    "util": {
+      "version": "0.10.4",
+      "resolved": "https://registry.npm.taobao.org/util/download/util-0.10.4.tgz",
+      "integrity": "sha1-OqASW/5mikZy3liFfTrOJ+y3aQE=",
+      "requires": {
+        "inherits": "2.0.3"
+      }
+    },
+    "vue": {
+      "version": "2.6.12",
+      "resolved": "https://registry.npm.taobao.org/vue/download/vue-2.6.12.tgz",
+      "integrity": "sha1-9evU+mvShpQD4pqJau1JBEVskSM="
+    }
+  }
+}