UPDATE category file

@@ -9,6 +9,9 @@ let SIGUNDONG_CODE;
 
 // 사용자가 index 페이지에서 주소를 입력하고 넘어오면 
 router.post('/', function(req, res) {
+    function callback(cb){
+        cb();
+    }
     console.log(req.body);
     let userLocation = req.body.userLocation;
     // let userSi = req.body.si
@@ -35,6 +38,17 @@ router.post('/', function(req, res) {
             xyList.push(result.documents[0].address.x);
             xyList.push(result.documents[0].address.y);
             console.log(xyList);
+            
+            callback(function(){
+                //버스api
+            })
+            callback(function(){
+                //지하철api
+            })
+            callback(function(){
+                //버스+지하철
+            })
+            
         }
     })
     res.render('category', { 'userLocation': req.body.userLocation });