finished wesbos#4 - array work

Author: Pete Cowles

04 - Array Cardio Day 1/index-START.html

@@ -34,32 +34,60 @@
       'Berne, Eric', 'Berra, Yogi', 'Berry, Wendell', 'Bevan, Aneurin', 'Ben-Gurion, David', 'Bevel, Ken', 'Biden, Joseph', 'Bennington, Chester', 'Bierce, Ambrose',
       'Billings, Josh', 'Birrell, Augustine', 'Blair, Tony', 'Beecher, Henry', 'Biondo, Frank'
     ];
-    
+
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+    const fifteens = inventors.filter(person => (person.year >= 1500 && person.year <1600));
+    console.table(fifteens);
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors first and last names
+    const names = inventors.map(person => person.first + ' ' + person.last);
+    console.log(names);
 
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
+    const sorted = inventors.sort((a, b) => a.year - b.year);
+    console.table(sorted);
 
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live all together?
+    const totalYears = inventors.reduce((total, person) => total += (person.passed - person.year), 0);
+    console.log(totalYears);
 
     // 5. Sort the inventors by years lived
+    const youngToOld = inventors.sort((a, b) => ((a.passed - a.year) - (b.passed - b.year)));
+    console.table(youngToOld);
 
     // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
     // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
+    // do this one on the web page
+
+    // const category = document.querySelector('.mw-catagory');
+    // const links = Array.from(category.querySelectorAll('a'));
+    // const de = links.map(link => link.textContent)
+    //                 .filter(streetName => streetName.includes('de'));
 
 
     // 7. sort Exercise
     // Sort the people alphabetically by last name
+    const peopleSorted = people.sort((a, b) => {
+      const aName = a.split(', ');
+      const bName = b.split(', ');
+      return (aName[0] > bName[0]) ? 1 : -1;
+    });
+    console.log(peopleSorted);
 
     // 8. Reduce Exercise
     // Sum up the instances of each of these
     const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck' ];
 
+    const instances = data.reduce((obj, item) => {
+      (obj[item]) ? obj[item]++ : obj[item] = 1;
+      return obj
+    }, {});
+    console.log(instances);
+
   </script>
 </body>
 </html>