Chris

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

@@ -38,29 +38,92 @@
 
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+
+    const fifteen = inventors.filter(inventor => inventor.year >= 1500 && inventor.year <= 1600)
+    console.table(fifteen);
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors first and last names
 
+    const fullName = inventors.map(inventor => `${inventor.first} ${inventor.last}`);
+    console.table(fullName);
+
+
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
+
+    // Long way
+
+    /*
+    const ordered = inventors.sort(function(a, b) {
+      if(a.year > b.year){
+        return 1;
+      }
+       else{
+        return -1;
+       }
+    });
+     */
+
+     //Shorthand
+
+     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 all together?
 
+    const totalYears = inventors.reduce((total, inventor) => {
+      return total + (inventor.passed - inventor.year)
+    }, 0);
+
+    console.table(totalYears);
+
     // 5. Sort the inventors by years lived
+
+    const oldest = inventors.sort(function(a , b){
+      const lastGuy = a.passed - a.year;
+      const nextGuy = b.passed - b.year;
+      return lastGuy > nextGuy ? -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 category = document.querySelector('.mw-category');
+    // const links = [...category.querySelector('a')];
+
+    // 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((lastOne, nextOne) => {
+      const [alast, afisrt] = lastOne.split(', ');
+      const [blast, bfisrt] = 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(function(obj, item){
+      if(!obj[item]){
+        obj[item] = 0;
+      }
+      obj[item]++;
+      return obj;
+    }, {});
+
+    console.log(transportation);
+
   </script>
 </body>
 </html>

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

@@ -27,12 +27,46 @@
 
     // Some and Every Checks
     // Array.prototype.some() // is at least one person 19 or older?
+
+    // const isAdult = people.some(function(person){
+    //   const currentYear = (new Date()).getFullYear();
+    //   if(currentYear - person.year >= 19){
+    //     return true;
+    //   }
+    // });
+
+    const someAdult = people.some(person => {
+      const currentYear = (new Date()).getFullYear();
+      return currentYear - person.year >= 19;
+    });
+
+    console.log(someAdult);
+    //true
+
     // Array.prototype.every() // is everyone 19 or older?
 
+    const everyAdult = people.every(person => {
+      const currentYear = (new Date()).getFullYear();
+      return currentYear - person.year >= 19;
+    });
+
+    console.log(everyAdult);
+    //false
+
     // 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
 
+    const comment = comments.find(function(comment){
+      if(comment.id === 823423){
+        return true;
+      }
+    })
+    console.log(comment);
+
+    const comment2 = comments.find(comment = comment.id === 823423);
+    console.log(comment2);
+
     // Array.prototype.findIndex()
     // Find the comment with this ID
     // delete the comment with the ID of 823423