Randy Calderon - Javascript-II

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 raising 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.
 
@@ -56,28 +56,81 @@ 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(item){
+    return fullName.push(item.first_name + ' ' + item.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(item){
+    return allCaps.push(item.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(function(item){
+    if (item.shirt_size === 'L') {
+       return largeShirts.push(item);
+    }
+});
 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 = [];
+runners.reduce((theReducer, item) =>{
+    return ticketPriceTotal = theReducer + item.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 solve 3 unique problems using one or many of the array methods listed above.
 
 // Problem 1
+//Find out how many of each shirt size there were. 
+// XS, S, M, L, XL, 2XL, 3XL
+let shirtSizearrayXS = [];
+let shirtSizearrayS = [];
+let shirtSizearrayM = [];
+let shirtSizearrayL = [];
+let shirtSizearrayXL = [];
+let shirtSizearray2XL = [];
+let shirtSizearray3XL = [];
+runners.filter(function(item){
+    if (item.shirt_size === 'XS') {
+        return shirtSizearrayXS.push(item.shirt_size)}
+       else if (item.shirt_size === 'S') {
+        return shirtSizearrayS.push(item.shirt_size);
+       } else if (item.shirt_size === 'M') {
+        return shirtSizearrayM.push(item.shirt_size); 
+       } else if (item.shirt_size === 'L') {
+        return shirtSizearrayL.push(item.shirt_size);
+       } else if (item.shirt_size === 'XL') {
+        return shirtSizearrayXL.push(item.shirt_size);
+       } else if (item.shirt_size === '2XL') {
+        return shirtSizearray2XL.push(item.shirt_size);
+       } else if (item.shirt_size === '3XL') {
+        return shirtSizearray3XL.push(item.shirt_size);
+       }
+});
+console.log(shirtSizearrayXS.length);
+console.log(shirtSizearrayS.length);
+console.log(shirtSizearrayM.length);
+console.log(shirtSizearrayL.length);
+console.log(shirtSizearrayXL.length);
+console.log(shirtSizearray2XL.length);
+console.log(shirtSizearray3XL.length);
+// I actually need to work on this! Make it way shorter!
+
 
 // Problem 2
+//Create an array of the top 15 donators names and donations. Find the average amount donated by the top 15.
+
+
 
-// Problem 3
+// Problem 3
+// Find out which companies had more than one representative.

assignments/callbacks.js

@@ -2,29 +2,42 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
 function firstItem(arr, cb) {
   // firstItem passes the first item of the given array to the callback function.
+  return cb(arr[0]);
 }
 
 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.push(arr.length - 1);
 }
 
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  let result = x + y;
+  return cb(result);
 }
 
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  let result = x * y;
+  return cb(result);
 }
 
 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[item] === item) {
+  return cb.push(true); 
+  } else {
+    return cb.push(false);
+  }
 }
 
+
 /* STRETCH PROBLEM */
 
 function removeDuplicates(array, cb) {

assignments/closure.js

@@ -1,11 +1,28 @@
 // ==== Challenge 1: Write your own closure ====
 // Write a simple closure of your own creation.  Keep it simple!
+function closure(array) {
+  let newArray = [];
+
+  function addArray(){
+    let info = 'owmdpoampodmcopamsopcmaopdmpalzmck';
+  }
+}
 
 
 // ==== Challenge 2: Create a counter function ====
 const counter = () => {
   // Return a function that when invoked increments and returns a counter variable.
+  let count = 0;
+  return function () {
+   return ++count;
+  }
 };
+
+const newCounter = counter();
+console.log(newCounter());
+console.log(newCounter());
+console.log(newCounter());
+console.log(newCounter());
 // Example usage: const newCounter = counter();
 // newCounter(); // 1
 // newCounter(); // 2
@@ -16,4 +33,13 @@ 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 counter = 0;
+  return {
+    'increment': function() {
+      return ++counter;
+    },
+    'decrement': function() {
+      return --counter;
+    }
+  }
+}

assignments/function-conversion.js

@@ -1,23 +1,32 @@
 // 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) => {return param}; 
 
 // let add = function (param1, param2) {
 //   return param1 + param2;
 // };
 // add(1,2);
+let addFunction = (param1, param2) => {return param1 + param2};
+console.log(addFunction(1, 2));
 
-let subtract = function (param1, param2) {
-  return param1 - param2;
-};
-subtract(1,2); //?
+//let subtract = function (param1, param2) {
+ // return param1 - param2;
+//};
+//subtract(1,2); //?
+let subtractFunction = (param1, param2) => {return param1 - param2};
+console.log(subtractFunction(10, 8));
 
 exampleArray = [1,2,3,4];
 // const triple = exampleArray.map(function (num) {
 //   return num * 3;
 // });
-// console.log(triple);
+// console.log(triple);
+const triple = exampleArray.map(num => {return num * 3});
+console.log(triple);
+
+//Still a pleb to arrow functions \o/