course wesbos#7 finished

Author: Jin Xu

07 - Array Cardio Day 2/index-START.html

@@ -28,13 +28,29 @@
     // Array.prototype.some() // is at least one person 19 or older?
     // Array.prototype.every() // is everyone 19 or older?
 
+    console.log('is at least one person 19 or older? The anwer is: ' + people.some(kid => (2017 - kid.year > 18)));
+    console.log('is everyone 19 or older? The anwer is: ' + people.every(kid => (2017 - kid.year > 18)));
+
     // 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
+    let txt = comments.find(comment => comment.id === 823423).text;
+    console.log(txt);
 
     // Array.prototype.findIndex()
     // Find the comment with this ID
     // delete the comment with the ID of 823423
+    let idx = comments.findIndex(comment => comment.id === 823423);
+    console.log('the index of the id 823423 is ' + idx);
+    let comments_new =  [
+      ...comments.slice(0, idx),
+      ...comments.slice(idx + 1)
+    ]
+
+    let newResult =[];
+    comments_new.map(i => newResult.push(i.text))
+    console.log('after delete it, the comments are [' + newResult.join(', ') +'] now');
+    
 
   </script>
 </body>

readme.md

@@ -10,7 +10,7 @@
 4. [x] ~~Array Cardio, Day 1~~
 5. [x] ~~Flex Panel Gallery~~
 6. [x] ~~Type Ahead~~
-7. [ ] Array Cardio, Day 2
+7. [x] ~~Array Cardio, Day 2~~
 8. [ ] Fun with HTML5 Canvas
 9. [ ] Dev Tools Domination
 10. [ ] Hold Shift and Check Checkboxes