xenocide21 · xenocide21 · Oct 15, 2019 · Oct 15, 2019
diff --git a/.idea/.gitignore b/.idea/.gitignore
diff --git a/.idea/JavaScript-II.iml b/.idea/JavaScript-II.iml
diff --git a/.idea/misc.xml b/.idea/misc.xml
diff --git a/.idea/modules.xml b/.idea/modules.xml
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
diff --git a/assignments/array-methods.js b/assignments/array-methods.js
@@ -58,28 +58,57 @@ const runners = [
 // ==== 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 and populate a new array called `fullNames`. This array will contain just strings.
 let fullNames = [];
+runners.forEach(function(fullName) {
+  return fullNames.push(`${fullName.last_name} ${fullName.first_name}`);
+});
 console.log(fullNames);
 
 // ==== Challenge 2: Use .map() ====
 // The event director needs to have all the runners' first names in uppercase because the director BECAME DRUNK WITH POWER. Populate an array called `firstNamesAllCaps`. This array will contain just strings.
-let firstNamesAllCaps = [];
+//let firstNamesAllCaps = [];
+
+
+const firstNamesAllCaps = runners.map(function(fullName){
+  return fullName.first_name.toUpperCase();
+});
 console.log(firstNamesAllCaps);
 
 // ==== Challenge 3: Use .filter() ====
 // The large shirts won't be available for the event due to an ordering issue. We need a filtered version of the runners array, containing only those runners with large sized shirts so they can choose a different size. This will be an array of objects.
-let runnersLargeSizeShirt = [];
+// let runnersLargeSizeShirt = [];
+
+const runnersLargeSizeShirt = runners.filter(function(shirtSize){
+  return shirtSize.shirt_size === "L";
+});
 console.log(runnersLargeSizeShirt);
 
 // ==== Challenge 4: Use .reduce() ====
 // The donations need to be tallied up and reported for tax purposes. Add up all the donations and save the total into a ticketPriceTotal variable.
-let ticketPriceTotal = 0;
+// let ticketPriceTotal = 0;
+
+const ticketPriceTotal = runners.reduce(function(taxes, donations){
+  return taxes + donations.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
-
+const quantityOfShirts = runners.filter(function(size){
+  return size.shirt_size === "XS";
+});
+console.log(quantityOfShirts.length);
 // Problem 2
+const largeDonation = runners.filter(function(amount){
+  return amount.donation > 200;
+});
+console.log(largeDonation);
+
+// Problem 3
 
-// Problem 3
+const allRunners = runners.map((people) => {
+  return {'id': people.id, 'name': people.first_name + " " + people.last_name};
+});
+console.log(allRunners);
diff --git a/assignments/callbacks.js b/assignments/callbacks.js
@@ -41,24 +41,50 @@ 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, function(length){
+    console.log(length);
+});
 
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
+    return cb(arr[arr.length -1]);
 }
+last(items, function(lastItem){
+    console.log(lastItem);
+});
 
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+    return cb(x, y)
 }
+sumNums(19, 12, function(x, y){
+    console.log(x + y);
+});
+
 
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+    return cb(x, y)
 }
+multiplyNums(9, 4, function(num1, num2) {
+    console.log(num1 * num2);
+});
 
 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.
+    if (list.indexOf(item) === -1) {
+        return cb(`"${item}" is not in the array`);
+    }
+    else {
+        return cb(`"${item}" is in the array`);
+    }
 }
+contains("Flower", items, function(listItem) {
+    console.log(listItem);
+});
 
 /* STRETCH PROBLEM */
 

diff --git a/assignments/closure.js b/assignments/closure.js
@@ -4,6 +4,19 @@
 // that manipulates variables defined in the outer scope.
 // The outer scope can be a parent function, or the top level of the script.
 
+const calendar = 'year';
+function returnNum(){
+    const calendarMP = 'months';
+    const calendarMS = 'month';
+    console.log(`There are 12 ${calendarMP} in a ${calendar}.`);
+    function returnNum(){
+        const calendarW = 'weeks'
+        console.log(`There are 4 ${calendarW} in a ${calendarMS}.`);
+    }
+    returnNum();
+}
+returnNum();
+
 
 /* STRETCH PROBLEMS, Do not attempt until you have completed all previous tasks for today's project files */
 
@@ -16,8 +29,15 @@ const counterMaker = () => {
   //      NOTE: This `counter` function, being nested inside `counterMaker`,
   //      "closes over" the `count` variable. It can "see" it in the parent scope!
   // 3- Return the `counter` function.
+    let count = 0;
+    return () => ++count;
 };
 // Example usage: const myCounter = counterMaker();
+const myCounter = counterMaker();
+console.log(myCounter());
+console.log(myCounter());
+console.log(myCounter());
+
 // myCounter(); // 1
 // myCounter(); // 2