Merge pull request #1 from damola-sd/damola-adewunmi

Damola adewunmi

Author: borjasolerme

assignments/array-methods.js

@@ -56,21 +56,33 @@ 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( element => {
+    fullName.push(element.first_name+" " +element.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(function(a) {return a.first_name}).forEach(element => allCaps.push(element.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.push(runners.filter(value => {
+    if(value.shirt_size === "L") { return value;}
+}));
 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 = [];
+function totalTicketPrice (total, amount) {
+    return total += amount;
+}
+ticketPriceTotal.push(runners.reduce((total, value) => total += value.donation, 0));
 console.log(ticketPriceTotal);
 
 // ==== Challenge 5: Be Creative ====

assignments/callbacks.js

@@ -23,29 +23,52 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
   });
 
 */
-
+function logger(sth) {
+  console.log(sth)
+}
 
 function getLength(arr, cb) {
+  cb(arr.length);
   // getLength passes the length of the array into the callback.
 }
+getLength(items, logger);
+
 
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
+  let last_item = items[items.length - 1];
+  cb(last_item);
 }
+last(items, logger);
 
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  let sum = x + y;
+  cb(sum);
 }
+sumNums(5, 6, logger);
 
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  let multiply = x * y;
+  cb(multiply);
 }
 
+multiplyNums(3, 6, logger );
+
 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 (list[i] === item) {
+    cb(true);
+  }
+  else { cb(false); } 
+}
 }
 
+contains("yo-yo", items, logger);
+
 /* STRETCH PROBLEM */
 
 function removeDuplicates(array, cb) {

assignments/closure.js

@@ -1,13 +1,20 @@
 // ==== Challenge 1: Write your own closure ====
 // Write a simple closure of your own creation.  Keep it simple!
-
+function add(a, b) { return a + b};
 
 /* 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 = () => {
   // Return a function that when invoked increments and returns a counter variable.
+  let count = 0;
+  const newCounter = () => {
+    count = count++;
+    console.log(count);
+     
+  }
+  return newCounter;
 };
 // Example usage: const newCounter = counter();
 // newCounter(); // 1
@@ -18,4 +25,13 @@ const counterFactory = () => {
   // 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.
+  let newObj = {
+    counter: 0,
+    increment: function () {
+      return this.counter = this.counter + 1;
+    },
+    decrement: function () {
+      return this.counter = this.counter - 1;
+    }
+  }
 };