Finished the day

Author: clockwerkz

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

@@ -34,40 +34,121 @@
     const bornInFifteen = inventors.filter(function(person){
       return person.year > 1499 && person.year < 1600;
     });
+    const fifteen = inventors.filter(function(inventor){
+      if (inventor.year >= 1500 && inventor.year < 1600) {
+        return true;
+      }
+      //if you don't return anything other than true it'll just treat it as false.
+    });
+
+    //filter can be simplified by using the =>
+    const fifteenSimplifying = inventors.filter(inventor => inventor.year > 1499 && inventor.year < 1600);
+
+    //console.table(fifteenSimplifying);
+    //console.table(bornInFifteen);
+    //console table outputs data to the console in tabular format
+
+
+
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors' first and last names
     const firstAndLast = inventors.map(function(person){
       return person.first + " " + person.last;
     });
 
+    const fullNames = inventors.map(inventor => `${inventor.first} ${inventor.last}`);
+
+
+
+
+
+
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
-    inventors.sort(function(a, b){return a.year - b.year;});
+    //inventors.sort(function(a, b){return a.year - b.year;});
+
+    //first person is a, second person is b
+    //const ordered = inventors.sort(function (a,b){
+      //if (a.year > b.year){
+        //return 1;
+      //} else {
+        //return -1;
+      //}
+    //});
+
+    //Using a ternarary(sp?) operator
+
+    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(function(total, person){
-      console.log (person.passed-person.year);
-      return total+(person.passed-person.year);
-    });
-      console.log (totalYears);
+    const totalYearsCF = inventors.reduce(function(total, inventor){
+      return total + (inventor.passed - inventor.year);
+    }, 0);
+
+    //console.log(totalYearsCF);
+
+    const totalYears = inventors.reduce((total, inventor) => {
+      return total + (inventor.passed - inventor.year);
+    }, 0);
+
+    //console.log (totalYears);
+
+    //ZERO!  You can enter another argument for the reduce function, and that effectively initializes the total var with zero.  Basically var total = 0;
+
+    
 
     // 5. Sort the inventors by years lived
 
+    const oldest = inventors.sort((a,b) => (a.passed-a.year) < (b.passed-b.year) ? 1 : -1);
+    //console.table(oldest);
+
+
     // 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 mainWikiPage = document.querySelector(".mw-category");
+    //const cityNames = document.querySelectorAll(".mw-category-group ul li a");
+    //You don't need to do descendant selector, in this case just finding any child of class mw-category that's an anchor would do
+   // const cityNames = Array.from(document.querySelectorAll('a'));
+    //Array from converts a Node List into an array
+
+    //const de = cityNames
+    //              .map(link => link.textContent)
+    //              .filter(streetName => streetName.includes("de") && !(streetName.includes("http")));
+
 
 
     // 7. sort Exercise
     // Sort the people alphabetically by last name
+    const alpha = people.sort((lastOne, nextOne) =>{
+      const [aLast, aFirst] = lastOne.split(', ');
+      const [bLast, bFirst] = nextOne.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 transportation = data.reduce((obj, item) => {
+        if (!obj[item]) {
+          obj[item] = 0;
+        } 
+        obj[item]++;
+        return obj;
+    },{});
+
+    console.log(transportation);
+
+
   </script>
 </body>
 </html>