@@ -26,16 +26,53 @@
 
     // Some and Every Checks
     // Array.prototype.some() // is at least one person 19 or older?
+
+      // Old Way
+    // const isAdult = people.some(function (person) {
+    //     const currentYear = (new Date()).getFullYear();
+    //     if (currentYear - person.year >= 19) {
+    //       return true;
+    //     }
+    // });
+
+      // ES6 Way
+    const isAdult = people.some(person => {
+      const currentYear = (new Date()).getFullYear();
+      return currentYear - person.year >= 19;
+    })
+    console.log(isAdult);
+
     // Array.prototype.every() // is everyone 19 or older?
 
+    const isEveryoneAdult = people.every(function (person) {
+        const currentYear = (new Date()).getFullYear();
+        if (currentYear - person.year >= 19) {
+          return true;
+        }
+    });
+    console.log(isEveryoneAdult);
+
     // Array.prototype.find()
     // Find is like filter, but instead returns just the one you are looking for
     // find the comment with the ID of 823423
 
+    const findComment = comments.find(comment => comment.id === 823423);
+
+    console.log(findComment);
+
     // Array.prototype.findIndex()
     // Find the comment with this ID
     // delete the comment with the ID of 823423
 
+    const findIndex = comments.findIndex(comment => comment.id === 823423);
+
+    console.log(findIndex);
+
+    // Deletes the comment with corresponding ID. 
+    comments.splice(findIndex, 1);
+
+    console.log(comments);
+
   </script>
 </body>
 </html>