all userId replace to childId

public/saveTracingGameData.js

@@ -4,12 +4,12 @@ function retryGame(){
 
 const queryString = window.location.search;
 const urlParams = new URLSearchParams(queryString);
-const userId = urlParams.get('childId');
+const childId = urlParams.get('childId');
 const gameVersion = urlParams.get('gameName');
 const gameId = urlParams.get('id');
 let submitNotic;
 
-console.log(userId);
+// console.log(childId);
 let startTime = Date.now();
 
 
@@ -94,7 +94,7 @@ function submitUserData(drawingZone) {
             'gameName': gameVersion,
             'gameID': gameId,
             'screenShot': imageCode,
-            'userId' : userId,
+            'childId' : childId,
             'gameTime' : timeDifferenceInSeconds,
             'score' : scoreTotal,
             'gameStar' : starValue