seven done

Author: hadaswerman

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

@@ -26,16 +26,69 @@
 
     // Some and Every Checks
     // Array.prototype.some() // is at least one person 19?
-    // Array.prototype.every() // is everyone 19?
+    //will return true if there is at least one adult in people array who is over 19
+
+    // const isAdult = people.some(function(person){
+    //   const currentYear = (new Date()).getFullYear();
+    //   if(currentYear - person.year >= 19){
+    //     return true;
+    //   }
+    // });
+    // console.log(isAdult);
+    //or
+
+
+    const isAdult = people.some(person => {
+      const currentYear = (new Date()).getFullYear();
+      return currentYear - person.year >= 19;
+    });
+    console.log(isAdult);
+
+   // Array.prototype.every() // is everyone 19?
+    const allAdult = people.every(person => {
+      const currentYear = (new Date()).getFullYear();
+      return currentYear - person.year >= 19;
+    });
+    console.log(allAdult);
+
+
+
+    // // Array.prototype.find()
+    // const theComment = comments.find(function(comment) {
+    //   if(comment.id === 823423){
+    //     return true;
+    //   }
+    // });
+    // console.log(theComment);
+    //or
+
+    const theComment = comments.find(comment =>
+      comment.id === 823423);
+    console.log(theComment);
+
 
-    // 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
 
     // Array.prototype.findIndex()
     // Find the comment with this ID
     // delete the comment with the ID of 823423
 
+    const index = comments.findIndex(comment =>
+      comment.id === 823423);
+    console.log('index', index);
+
+    // comments.splice(index, 1);
+
+    //popular in redux world:
+    const newComments = [
+      ...comments.slice(0, index),
+      ...comments.slice(index + 1)
+      ];
+
+      //will build new array of comments
+      //... will spread items into new array
+
   </script>
 </body>
 </html>