Merge pull request liammclennan#27 from shosti/for-in

Explicitly declare for..in vars

Author: liammclennan

topics/about_control_structures.js

@@ -24,7 +24,7 @@ test("for in", function() {
 	};
 	var result = "";
 	// for in enumerates the property names of an object
-	for (property_name in person) {
+	for (var property_name in person) {
   result = result + property_name;
 	};
 	equals(result, __, 'what is the value of result?');

topics/about_reflection.js

@@ -21,7 +21,7 @@ test("property enumeration", function() {
     var keys = [];
     var values = [];
     var person = {name: 'Amory Blaine', age: 102, unemployed: true};
-    for(propertyName in person) {
+    for(var propertyName in person) {
         keys.push(propertyName);
         values.push(person[propertyName]);
     }
@@ -31,6 +31,7 @@ test("property enumeration", function() {
 
 test("hasOwnProperty", function() {
     var b = new B();
+    var propertyName;
 
     var keys = [];
     for (propertyName in b) {