Prefer links to MDN over w3schools.

Author: Brook Riggio

23-arrayPropertiesAndMethods.html

@@ -33,8 +33,12 @@
             document.write(transportation.length + '<br>');
             document.write(transportation[5] + '<br>');
 
-            // See all properties and methods or an array
-            // http://www.w3schools.com/jsref/jsref_obj_array.asp
+            /*
+                See all properties and methods or an array
+                https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
+                and
+                https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/prototype#Methods
+            */
 
             // The join method - converts an array to a string
 

24-mathObjects.html

@@ -56,7 +56,7 @@
             document.write('Your random number is ' +  randomNumber + '<br>');
 
             // For a full list of math methods
-            // http://www.w3schools.com/jsref/jsref_obj_math.asp
+            // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math
 
         </script>
 

25-dateObject.html

@@ -31,7 +31,7 @@
             setInterval('printTime()', 1000);
 
             // All the date object methods
-            // http://www.w3schools.com/jsref/jsref_obj_date.asp
+            // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date
 
 
         </script>