update

simple-demo/location_point.html

@@ -36,8 +36,8 @@
     const app = new Vue({
         el: '#app',
         data: {
-            longitude: "未知",
-            latitude: "未知",
+            longitude: "0",
+            latitude: "0",
             locationStr: "未知"
         },
         mounted: function () {