Finished day wesbos#4: Array Cardio Day 1

Author: macuk

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

@@ -33,29 +33,68 @@
 
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+    const fifteen = inventors.filter(function (item) {
+        if(item.year >= 1500 && item.year <= 1599) {
+            return true;
+        }
+    });
+    console.table(fifteen);
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors' first and last names
+    const fullNames = inventors.map(inventor => `${inventor.first} ${inventor.last}`);
+    console.log(fullNames);
 
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
+    const ordered = inventors.sort((a, b) => (a.year > b.year) ? 1 : -1);
+    console.table(ordered);
 
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live?
+    const totalYears = inventors.reduce((total, inventor) => {
+            return total + (inventor.passed - inventor.year);
+    }, 0);
+    console.log(totalYears);
 
     // 5. Sort the inventors by years lived
+    const sorted = inventors.sort(function(a, b) {
+        const years = (inventor) => inventor.passed - inventor.year;
+        return (years(a) > years(b)) ? -1 : 1;
+    });
+    console.table(sorted);
 
     // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
     // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
 
+    // const category = document.querySelector('.mw-category');
+    // const links = Array.from(category.querySelectorAll('a')); // because there is NodeList
+    // const de = links
+    //             .map(link => link.textContent)
+    //             .filter(streetName => streetName.includes('de'));
 
     // 7. sort Exercise
     // Sort the people alphabetically by last name
+    const alpha = people.sort((a, b) => {
+        const [aLast, aFirst] = a.split(', ');
+        const [bLast, bFirst] = b.split(', ');
+        return aLast > bLast ? 1 : -1;
+    });
+    console.log(alpha);
 
     // 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 transport = data.reduce(function(obj, item) {
+        if(!obj[item]) {
+            obj[item] = 0;
+        }
+        obj[item]++;
+        return obj;
+    }, {});
+    console.log(transport);
+
   </script>
 </body>
 </html>