finished callbacks, 2 closures, and still working on array-methods

assignments/array-methods.js

@@ -55,22 +55,41 @@ 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 = [];
+let fullName = []
+runners.forEach((runner) => {
+   return  fullName.push(`${runner.last_name}, ${runner.first_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 = [];
+allCaps = runners.map((runner) => {
+   return 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) => {
+   if (runner.shirt_size === 'L') {
+      return runner;
+   }
+});
 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 = [];
+let accum = (accum, donation) => {
+   return accum + donation;
+}
+let rundonate = runners.map((runner) => {
+   return runner.donation;
+});
+
+ticketPriceTotal = rundonate.reduce(accum);
 console.log(ticketPriceTotal);
 
 // ==== Challenge 5: Be Creative ====

assignments/callbacks.js

@@ -26,22 +26,33 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
 
 function getLength(arr, cb) {
+  return cb(arr.length())
   // getLength passes the length of the array into the callback.
 }
 
 function last(arr, cb) {
+  return cb(arr[arr.length()-1])
   // last passes the last item of the array into the callback.
 }
 
 function sumNums(x, y, cb) {
+  return cb(x+y)
   // sumNums adds two numbers (x, y) and passes the result to the callback.
 }
 
 function multiplyNums(x, y, cb) {
+  return cb(x*y)
   // multiplyNums multiplies two numbers and passes the result to the callback.
 }
-
+// let logs = (num) => {return num}
+// console.log(multiplyNums(2,2,logs))
 function contains(item, list, cb) {
+  if (item in list) {
+    return cb(true);
+  }
+  else {
+    return cb(false);
+  }
   // contains checks if an item is present inside of the given array/list.
   // Pass true to the callback if it is, otherwise pass false.
 }

assignments/closure.js

@@ -1,21 +1,43 @@
 // ==== Challenge 1: Write your own closure ====
 // Write a simple closure of your own creation.  Keep it simple!
-
-
+function parent() {
+  const planet = 'earth';
+  console.log(planet);
+  function child1() {
+    const country = 'USA';
+    console.log(country);
+    function child2() {
+      const state = 'Indiana';
+      console.log(state);
+    }child2();
+  }child1();
+}parent();
 /* STRETCH PROBLEMS, Do not attempt until you have completed all previous tasks for today's project files */
 
 
 // ==== Challenge 2: Create a counter function ====
 const counter = () => {
+  let increment = 0;
+  return () => {
+    increment++;
+    return increment;
+  }
+
   // Return a function that when invoked increments and returns a counter variable.
-};
-// Example usage: const newCounter = counter();
+}
+const newCounter = counter();
+console.log(newCounter());
+console.log(newCounter());
+console.log(newCounter());
+console.log(newCounter());
+console.log(newCounter());
+
 // newCounter(); // 1
 // newCounter(); // 2
 
 // ==== Challenge 3: Create a counter function with an object that can increment and decrement ====
-const counterFactory = () => {
+
+// console.log(newFactory.increment();
   // Return an object that has two methods called `increment` and `decrement`.
   // `increment` should increment a counter variable in closure scope and return it.
   // `decrement` should decrement the counter variable and return it.
-};

assignments/index.html

@@ -10,7 +10,6 @@
   <script src="array-methods.js"></script>
   <script src="callbacks.js"></script>
   <script src="closure.js"></script>
-  <script src="stretch-function-conversion.js"></script>
 </head>
 
 <body>