JS-II - Dan O.

assignments/array-methods.js

@@ -56,28 +56,56 @@ const runners = [{"id":1,"first_name":"Charmain","last_name":"Seiler","email":"c
 // ==== Challenge 1: Use .forEach() ====
 // The event director needs both the first and last names of each runner for their running bibs.  Combine both the first and last names into a new array called fullName. 
 let fullName = [];
+runners.forEach(function(runner) {
+  fullName.push(`${runner.first_name} ${runner.last_name}`)
+})
 console.log(fullName);
 
 // ==== Challenge 2: Use .map() ====
 // The event director needs to have all the runner's first names converted to uppercase because the director BECAME DRUNK WITH POWER. Convert each first name into all caps and log the result
-let allCaps = [];
-console.log(allCaps); 
+// let allCaps = [];
+let allCaps = runners.map(runner => runner.first_name.toUpperCase())
+console.log(allCaps);
 
 // ==== Challenge 3: Use .filter() ====
 // The large shirts won't be available for the event due to an ordering issue.  Get a list of runners with large sized shirts so they can choose a different size. Return an array named largeShirts that contains information about the runners that have a shirt size of L and log the result
 let largeShirts = [];
+largeShirts = runners.filter(runner => runner.shirt_size.includes("XL"))
 console.log(largeShirts);
 
 // ==== Challenge 4: Use .reduce() ====
 // The donations need to be tallied up and reported for tax purposes. Add up all the donations into a ticketPriceTotal array and log the result
 let ticketPriceTotal = [];
+ticketPriceTotal.push(runners.reduce(function(accumulator, currentValue) {
+  return accumulator + currentValue.donation;
+}, 0))
 console.log(ticketPriceTotal);
 
 // ==== Challenge 5: Be Creative ====
 // Now that you have used .forEach(), .map(), .filter(), and .reduce().  I want you to think of potential problems you could solve given the data set and the 5k fun run theme.  Try to create and then solve 3 unique problems using one or many of the array methods listed above.
 
 // Problem 1
+// While we have some data, might as well analyze the 5K enthusiast market. Log an array with each email client used by runners.
+let emailList = [];
+runners.forEach(runner => emailList.push(runner.email.split("@")[1]))
+console.log(emailList.sort())
 
 // Problem 2
+// Let's see if we can't narrow this down to the high rollers. Return an array of $250+ donors and the company that pays them so handsomely.
+let highRollers = [];
+highRollers = runners.filter(runner => runner.donation > 250);
+highRollers = highRollers.map(runner => `${runner.first_name} ${runner.last_name} donated $${runner.donation} and works at ${runner.company_name}.`)
+console.log(highRollers)
 
-// Problem 3
+// Problem 3
+// Trevor Studd is clearly some sort of prank name. Remove him from the roster!
+let i = runners.findIndex(runner => runner.last_name === "Studd") + 1;
+let runnersFixed = runners.filter(runner => runner.last_name !== "Studd");
+runnersFixed.push({id: i,
+    first_name: 'Place',
+    last_name: 'Holder',
+    email: '[email protected]',
+    shirt_size: 'N/A',
+    company_name: 'N/A',
+    donation: 0})
+console.log(runnersFixed)

assignments/callbacks.js

@@ -27,29 +27,56 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
 function getLength(arr, cb) {
   // getLength passes the length of the array into the callback.
+  return cb(arr.length);
 }
 
+getLength(items, (long => console.log(long)));
+
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
+  return cb(arr[getLength(arr, (long => long)) - 1])
 }
 
+last(items, (end => console.log(end)))
+
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  return cb(x + y)
 }
 
+sumNums(53, 9, sum => console.log(sum))
+
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  return cb(x * y)
 }
 
+multiplyNums(6, 7, (prod => console.log(prod)))
+
+
 function contains(item, list, cb) {
   // contains checks if an item is present inside of the given array/list.
   // Pass true to the callback if it is, otherwise pass false.
+  return cb(list.includes(item))
 }
 
+contains("Gum", items, (bool => console.log(bool)))
+
 /* STRETCH PROBLEM */
 
 function removeDuplicates(array, cb) {
   // removeDuplicates removes all duplicate values from the given array.
   // Pass the duplicate free array to the callback function.
   // Do not mutate the original array.
+  newArray = []
+  array.forEach(function(element) {
+    if (!newArray.includes(element)) {
+      newArray.push(element)
+    }
+
+  })
+  return cb(newArray)
 }
+
+numbers = [1, 1, 2, 2, 2, 3, 4, 3, 2, 123, 234, 123, 6, 1]
+removeDuplicates(numbers, array => console.log(array))

assignments/closure.js

@@ -1,6 +1,21 @@
 // ==== Challenge 1: Write your own closure ====
 // Write a simple closure of your own creation.  Keep it simple!
 
+function parrot(phrase) {
+  const name = "Polly"
+  function hungry() {
+    let amHungry = true;
+    console.log(`${name} wanna cracker!`);
+    debugger;
+  }
+
+  console.log(`${phrase}, ${phrase}`)
+  hungry()
+}
+
+parrot("Hello")
+
+
 
 /* STRETCH PROBLEMS, Do not attempt until you have completed all previous tasks for today's project files */
 

assignments/tempCodeRunnerFile.js

@@ -0,0 +1,3 @@
+Example usage: const newCounter = counter();
+newCounter(); // 1
+newCounter(); // 2