Dexter lewis

assignments/array-methods.js

@@ -1,4 +1,4 @@
-// A local community center is holding a fund rasising 5k fun run and has invited 50 small businesses to make a small donation on their behalf for some much needed updates to their facilities.  Each business has assigned a representative to attend the event along with a small donation.
+// A local community center is holding a fund rasising 5k fun run and has invited 50 small businesses to make a small donation on their behalf for some .much needed updates to their facilities.  Each business has assigned a representative to attend the event along with a small donation.
 
 // Scroll to the bottom of the list to use some advanced array methods to help the event director gather some information from the businesses.
 
@@ -56,21 +56,32 @@ 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(combineName => fullName.push(`${combineName.first_name} ${combineName.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 = [];
+runners.map(element => allCaps.push(element.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 = [];
+runners.filter(shirt => {
+   if (shirt.shirt_size === 'L') {
+       largeShirts.push(shirt);
+   }
+})
 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((acc, currVal) => {
+    return acc + currVal.donation;
+},0));
 console.log(ticketPriceTotal);
 
 // ==== Challenge 5: Be Creative ====

assignments/callbacks.js

@@ -1,6 +1,6 @@
 // Create a callback function and invoke the function to test your work. You have been provided an example of a problem and a solution to see how this works with our items array.  Study both the problem and the solution to figure out the rest of the problems.
 
-const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
+const items = ["Pencil", "Notebook", "yo-yo", "Gum"];
 
 /* 
 
@@ -21,26 +21,36 @@ 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);
 }
 
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
+  return cb(arr.slice(-1));
 }
 
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  return cb(x + y);
 }
 
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  return cb(x * y);
 }
 
 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.
+  for (let i = 0; i < list.length; i++) {
+    if (item === list[i]) {
+      cb(true);
+    } else {
+      cb(fale);
+    }
+  }
 }
 
 /* STRETCH PROBLEM */

assignments/closure.js

@@ -1,14 +1,32 @@
 // ==== Challenge 1: Write your own closure ====
 // Write a simple closure of your own creation.  Keep it simple!
 
+function showName(firstName, lastName) {
+  let nameIntro = "Hello, my name is";
+  function makeFullName() {
+    return `${nameIntro} ${firstName} ${lastName}`;
+  }
+  return makeFullName();
+}
 
+console.log(showName("Amy", "Truong"));
+
+/*?*/
 // ==== Challenge 2: Create a counter function ====
+let num = 0;
 const counter = () => {
   // Return a function that when invoked increments and returns a counter variable.
+  function plusONe() {
+    return num++;
+  }
+  return plusONe(); /*?*/
 };
 // Example usage: const newCounter = counter();
 // newCounter(); // 1
 // newCounter(); // 2
+counter();
+counter();
+counter();
 
 /* STRETCH PROBLEM, Do not attempt until you have completed all previous tasks for today's project files */
 

assignments/stretch-function-conversion.js

@@ -1,23 +1,38 @@
 // Take the commented ES5 syntax and convert it to ES6 arrow Syntax
 
 // let myFunction = function () {};
+    let myFunction = () => {};
 
 // let anotherFunction = function (param) {
 //   return param;
 // };
+let anotherFunction = param => param;
 
 // let add = function (param1, param2) {
 //   return param1 + param2;
 // };
 // add(1,2);
 
+let add = (param1, param2) => param1 + param2;
+
+console.log(add(1,2));
+
 // let subtract = function (param1, param2) {
 //   return param1 - param2;
 // };
 // subtract(1,2);
 
+let subtract = (param1, param2) => param1 - param2;
+
+console.log(subtract(1,2));
+
 // exampleArray = [1,2,3,4];
 // const triple = exampleArray.map(function (num) {
 //   return num * 3;
 // });
-// console.log(triple);
+// console.log(triple);
+
+const exampleArray = [1,2,3,4];
+const tripple = exampleArray.map(num => num * 3);
+
+console.log(tripple)