fixes

1-js/04-object-basics/01-object/3-is-empty/solution.md

@@ -1,11 +1,10 @@
 Just loop over the object and `return false` immediately if there's at least one property.
 
 ```js
-function isEmpty(obj) 
+function isEmpty(obj) {
   for(let key in obj) {
     return false;
   }
   return true;
 }
 ```
-

1-js/04-object-basics/01-object/article.md

@@ -233,12 +233,11 @@ In real code we often use existing variables as values for property names.
 For instance:
 
 ```js run
-function makeUser() {
-  let name = prompt("Name?");
-  let age = prompt("Age?");
+function makeUser(name, age) {
   return {
     name: name,
     age: age
+    // ...other properties
   };
 }
 
@@ -256,6 +255,7 @@ function makeUser(name, age) {
   return {
     name, // same as name: name
     age   // same as age: age
+    // ...
   };
 */!*
 }