iphoneX适配

@@ -21,7 +21,11 @@ export default {
       }
       }
     },
     },
     windowHeight() {
     windowHeight() {
-      return window.innerHeight + 'px';
+      if (typeof window !== 'undefined') {
+        return window.innerHeight + 'px';
+      } else {
+        return '100%';
+      }
     }
     }
   },
   },
   mounted() {
   mounted() {

@@ -102,4 +102,10 @@ export default {
   width: 100%;
   width: 100%;
   background-color: white;
   background-color: white;
 }
 }
+
+@supports (bottom: env(safe-area-inset-bottom)) {
+  .footer {
+    height: calc(env(safe-area-inset-bottom) + 100px);
+  }
+}
 </style>
 </style>