Update index.html

index.html

@@ -21,13 +21,13 @@ var map = new BMap.Map("allmap");            // 创建Map实例
 map.centerAndZoom("上海",15);                     // 初始化地图,设置中心点坐标和地图级别。
 
 $.ajax({
-    url: "http://api.douban.com/event/location/shanghai",
+    url: "http://api.douban.com/event/location/shanghai?type=exhibition&max-results=50",
 })
     .done(function( response ){
         console.log("received", response);
     })
     .fail(function() {
-        alert("error");
+        alert("无法访问豆瓣同城API！");
     });
 
 </script>