Question

// 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.

const runners = [

{ id: 1, first_name: "Charmain", last_name: "Seiler", email: "[email protected]", shirt_size: "2XL", company_name: "Divanoodle", donation: 75 },

{ id: 2, first_name: "Whitaker", last_name: "Ierland", email: "[email protected]", shirt_size: "2XL", company_name: "Wordtune", donation: 148 },

{ id: 3, first_name: "Julieta", last_name: "McCloid", email: "[email protected]", shirt_size: "S", company_name: "Riffpedia", donation: 171 },

{ id: 4, first_name: "Martynne", last_name: "Paye", email: "[email protected]", shirt_size: "XL", company_name: "Wordware", donation: 288 },

{ id: 5, first_name: "Gussy", last_name: "Raraty", email: "[email protected]", shirt_size: "L", company_name: "Oozz", donation: 291 },

{ id: 6, first_name: "Yule", last_name: "Tommasetti", email: "[email protected]", shirt_size: "S", company_name: "Yodo", donation: 27 },

{ id: 7, first_name: "Kathie", last_name: "Majury", email: "[email protected]", shirt_size: "3XL", company_name: "Zoomcast", donation: 261 },

{ id: 8, first_name: "Tanner", last_name: "Branton", email: "[email protected]", shirt_size: "2XL", company_name: "Realmix", donation: 28 },

{ id: 9, first_name: "Sarina", last_name: "Lasham", email: "[email protected]", shirt_size: "XL", company_name: "Gigashots", donation: 110 },

{ id: 10, first_name: "Bertie", last_name: "Lonergan", email: "[email protected]", shirt_size: "3XL", company_name: "Skinte", donation: 62 },

{ id: 11, first_name: "Trevor", last_name: "Studd", email: "[email protected]", shirt_size: "S", company_name: "Cogidoo", donation: 76 },

{ id: 12, first_name: "Malachi", last_name: "Okeshott", email: "[email protected]", shirt_size: "M", company_name: "DabZ", donation: 91 },

{ id: 13, first_name: "Berget", last_name: "Logsdail", email: "[email protected]", shirt_size: "M", company_name: "Mymm", donation: 9 },

{ id: 14, first_name: "Loise", last_name: "Rivlin", email: "[email protected]", shirt_size: "2XL", company_name: "Linktype", donation: 204 },

{ id: 15, first_name: "Christan", last_name: "Kendall", email: "[email protected]", shirt_size: "XS", company_name: "Skinix", donation: 252 },

{ id: 16, first_name: "Kayla", last_name: "Whitwam", email: "[email protected]", shirt_size: "2XL", company_name: "Oyope", donation: 147 },

{ id: 17, first_name: "Heddie", last_name: "Heningam", email: "[email protected]", shirt_size: "L", company_name: "Skinix", donation: 172 },

{ id: 18, first_name: "Mace", last_name: "Ballinger", email: "[email protected]", shirt_size: "S", company_name: "Nlounge", donation: 266 },

{ id: 19, first_name: "Nola", last_name: "Abberley", email: "[email protected]", shirt_size: "XL", company_name: "Photospace", donation: 148 },

{ id: 20, first_name: "Nadine", last_name: "Tresler", email: "[email protected]", shirt_size: "3XL", company_name: "Wikido", donation: 292 },

{ id: 21, first_name: "Ulrikaumeko", last_name: "Vuittet", email: "[email protected]", shirt_size: "S", company_name: "Skinte", donation: 102 },

{ id: 22, first_name: "Saunder", last_name: "Spennock", email: "[email protected]", shirt_size: "3XL", company_name: "Kwimbee", donation: 213 },

{ id: 23, first_name: "Carmel", last_name: "Woffinden", email: "[email protected]", shirt_size: "S", company_name: "Rooxo", donation: 137 },

{ id: 24, first_name: "Marielle", last_name: "Kimmel", email: "[email protected]", shirt_size: "M", company_name: "Livetube", donation: 96 },

{ id: 25, first_name: "Brucie", last_name: "Burris", email: "[email protected]", shirt_size: "2XL", company_name: "Wordtune", donation: 128 },

{ id: 26, first_name: "Juan", last_name: "Berzon", email: "[email protected]", shirt_size: "3XL", company_name: "Einti", donation: 234 },

{ id: 27, first_name: "Sacha", last_name: "Olsen", email: "[email protected]", shirt_size: "2XL", company_name: "Viva", donation: 190 },

{ id: 28, first_name: "Jamey", last_name: "O'Nolan", email: "[email protected]", shirt_size: "XL", company_name: "Skinix", donation: 31 },

{ id: 29, first_name: "Morrie", last_name: "Rainard", email: "[email protected]", shirt_size: "XS", company_name: "Podcat", donation: 52 },

{ id: 30, first_name: "Fidel", last_name: "Roskelly", email: "[email protected]", shirt_size: "XS", company_name: "Avavee", donation: 5 },

{ id: 31, first_name: "Toni", last_name: "MacSweeney", email: "[email protected]", shirt_size: "M", company_name: "Jaloo", donation: 82 },

{ id: 32, first_name: "Jessey", last_name: "Walhedd", email: "[email protected]", shirt_size: "L", company_name: "Trilia", donation: 5 },

{ id: 33, first_name: "Karola", last_name: "Piper", email: "[email protected]", shirt_size: "3XL", company_name: "Yombu", donation: 110 },

{ id: 34, first_name: "Marley", last_name: "Mitchenson", email: "[email protected]", shirt_size: "M", company_name: "Zoonoodle", donation: 97 },

{ id: 35, first_name: "Marrilee", last_name: "Thrasher", email: "[email protected]", shirt_size: "XL", company_name: "Bluejam", donation: 17 },

{ id: 36, first_name: "Tye", last_name: "Manie", email: "[email protected]", shirt_size: "L", company_name: "Kanoodle", donation: 30 },

{ id: 37, first_name: "Charleen", last_name: "Sheering", email: "[email protected]", shirt_size: "3XL", company_name: "Jatri", donation: 262 },

{ id: 38, first_name: "Valma", last_name: "Eynaud", email: "[email protected]", shirt_size: "XS", company_name: "Jaxbean", donation: 212 },

{ id: 39, first_name: "Dollie", last_name: "McDarmid", email: "[email protected]", shirt_size: "S", company_name: "Kayveo", donation: 74 },

{ id: 40, first_name: "Minna", last_name: "Hymas", email: "[email protected]", shirt_size: "XS", company_name: "Vimbo", donation: 101 },

{ id: 41, first_name: "Jsandye", last_name: "Frend", email: "[email protected]", shirt_size: "XS", company_name: "Latz", donation: 156 },

{ id: 42, first_name: "Yevette", last_name: "Hacket", email: "[email protected]", shirt_size: "XL", company_name: "Lazzy", donation: 291 },

{ id: 43, first_name: "Hank", last_name: "Zebedee", email: "[email protected]", shirt_size: "L", company_name: "Gigashots", donation: 241 },

{ id: 44, first_name: "Jodie", last_name: "Stawell", email: "[email protected]", shirt_size: "S", company_name: "Jaxspan", donation: 262 },

{ id: 45, first_name: "Falito", last_name: "Karsh", email: "[email protected]", shirt_size: "S", company_name: "Mycat", donation: 239 },

{ id: 46, first_name: "Reginauld", last_name: "Purselowe", email: "[email protected]", shirt_size: "L", company_name: "Jabbersphere", donation: 11 },

{ id: 47, first_name: "Vida", last_name: "Tydd", email: "[email protected]", shirt_size: "S", company_name: "Quaxo", donation: 55 },

{ id: 48, first_name: "Anderea", last_name: "MacGiolla Pheadair", email: "[email protected]", shirt_size: "2XL", company_name: "Kwimbee", donation: 214 },

{ id: 49, first_name: "Bel", last_name: "Alway", email: "[email protected]", shirt_size: "S", company_name: "Voolia", donation: 107 },

{ id: 50, first_name: "Shell", last_name: "Baine", email: "[email protected]", shirt_size: "M", company_name: "Gabtype", donation: 171 },

];

// ==== 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 = [];

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 = [];

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 = [];

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;

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

// Problem 2

// Problem 3

Answer 1

<!DOCTYPE html>
<html>
<body>

<h2>Golf Score Calculator.</h2>

<script>
const runners = [

{ id: 1, first_name: "Charmain", last_name: "Seiler", email: "[email protected]", shirt_size: "2XL", company_name: "Divanoodle", donation: 75 },

{ id: 2, first_name: "Whitaker", last_name: "Ierland", email: "[email protected]", shirt_size: "2XL", company_name: "Wordtune", donation: 148 },

{ id: 3, first_name: "Julieta", last_name: "McCloid", email: "[email protected]", shirt_size: "S", company_name: "Riffpedia", donation: 171 },

{ id: 4, first_name: "Martynne", last_name: "Paye", email: "[email protected]", shirt_size: "XL", company_name: "Wordware", donation: 288 },

{ id: 5, first_name: "Gussy", last_name: "Raraty", email: "[email protected]", shirt_size: "L", company_name: "Oozz", donation: 291 },

{ id: 6, first_name: "Yule", last_name: "Tommasetti", email: "[email protected]", shirt_size: "S", company_name: "Yodo", donation: 27 },

{ id: 7, first_name: "Kathie", last_name: "Majury", email: "[email protected]", shirt_size: "3XL", company_name: "Zoomcast", donation: 261 },

{ id: 8, first_name: "Tanner", last_name: "Branton", email: "[email protected]", shirt_size: "2XL", company_name: "Realmix", donation: 28 },

{ id: 9, first_name: "Sarina", last_name: "Lasham", email: "[email protected]", shirt_size: "XL", company_name: "Gigashots", donation: 110 },

{ id: 10, first_name: "Bertie", last_name: "Lonergan", email: "[email protected]", shirt_size: "3XL", company_name: "Skinte", donation: 62 },

{ id: 11, first_name: "Trevor", last_name: "Studd", email: "[email protected]", shirt_size: "S", company_name: "Cogidoo", donation: 76 },

{ id: 12, first_name: "Malachi", last_name: "Okeshott", email: "[email protected]", shirt_size: "M", company_name: "DabZ", donation: 91 },

{ id: 13, first_name: "Berget", last_name: "Logsdail", email: "[email protected]", shirt_size: "M", company_name: "Mymm", donation: 9 },

{ id: 14, first_name: "Loise", last_name: "Rivlin", email: "[email protected]", shirt_size: "2XL", company_name: "Linktype", donation: 204 },

{ id: 15, first_name: "Christan", last_name: "Kendall", email: "[email protected]", shirt_size: "XS", company_name: "Skinix", donation: 252 },

{ id: 16, first_name: "Kayla", last_name: "Whitwam", email: "[email protected]", shirt_size: "2XL", company_name: "Oyope", donation: 147 },

{ id: 17, first_name: "Heddie", last_name: "Heningam", email: "[email protected]", shirt_size: "L", company_name: "Skinix", donation: 172 },

{ id: 18, first_name: "Mace", last_name: "Ballinger", email: "[email protected]", shirt_size: "S", company_name: "Nlounge", donation: 266 },

{ id: 19, first_name: "Nola", last_name: "Abberley", email: "[email protected]", shirt_size: "XL", company_name: "Photospace", donation: 148 },

{ id: 20, first_name: "Nadine", last_name: "Tresler", email: "[email protected]", shirt_size: "3XL", company_name: "Wikido", donation: 292 },

{ id: 21, first_name: "Ulrikaumeko", last_name: "Vuittet", email: "[email protected]", shirt_size: "S", company_name: "Skinte", donation: 102 },

{ id: 22, first_name: "Saunder", last_name: "Spennock", email: "[email protected]", shirt_size: "3XL", company_name: "Kwimbee", donation: 213 },

{ id: 23, first_name: "Carmel", last_name: "Woffinden", email: "[email protected]", shirt_size: "S", company_name: "Rooxo", donation: 137 },

{ id: 24, first_name: "Marielle", last_name: "Kimmel", email: "[email protected]", shirt_size: "M", company_name: "Livetube", donation: 96 },

{ id: 25, first_name: "Brucie", last_name: "Burris", email: "[email protected]", shirt_size: "2XL", company_name: "Wordtune", donation: 128 },

{ id: 26, first_name: "Juan", last_name: "Berzon", email: "[email protected]", shirt_size: "3XL", company_name: "Einti", donation: 234 },

{ id: 27, first_name: "Sacha", last_name: "Olsen", email: "[email protected]", shirt_size: "2XL", company_name: "Viva", donation: 190 },

{ id: 28, first_name: "Jamey", last_name: "O'Nolan", email: "[email protected]", shirt_size: "XL", company_name: "Skinix", donation: 31 },

{ id: 29, first_name: "Morrie", last_name: "Rainard", email: "[email protected]", shirt_size: "XS", company_name: "Podcat", donation: 52 },

{ id: 30, first_name: "Fidel", last_name: "Roskelly", email: "[email protected]", shirt_size: "XS", company_name: "Avavee", donation: 5 },

{ id: 31, first_name: "Toni", last_name: "MacSweeney", email: "[email protected]", shirt_size: "M", company_name: "Jaloo", donation: 82 },

{ id: 32, first_name: "Jessey", last_name: "Walhedd", email: "[email protected]", shirt_size: "L", company_name: "Trilia", donation: 5 },

{ id: 33, first_name: "Karola", last_name: "Piper", email: "[email protected]", shirt_size: "3XL", company_name: "Yombu", donation: 110 },

{ id: 34, first_name: "Marley", last_name: "Mitchenson", email: "[email protected]", shirt_size: "M", company_name: "Zoonoodle", donation: 97 },

{ id: 35, first_name: "Marrilee", last_name: "Thrasher", email: "[email protected]", shirt_size: "XL", company_name: "Bluejam", donation: 17 },

{ id: 36, first_name: "Tye", last_name: "Manie", email: "[email protected]", shirt_size: "L", company_name: "Kanoodle", donation: 30 },

{ id: 37, first_name: "Charleen", last_name: "Sheering", email: "[email protected]", shirt_size: "3XL", company_name: "Jatri", donation: 262 },

{ id: 38, first_name: "Valma", last_name: "Eynaud", email: "[email protected]", shirt_size: "XS", company_name: "Jaxbean", donation: 212 },

{ id: 39, first_name: "Dollie", last_name: "McDarmid", email: "[email protected]", shirt_size: "S", company_name: "Kayveo", donation: 74 },

{ id: 40, first_name: "Minna", last_name: "Hymas", email: "[email protected]", shirt_size: "XS", company_name: "Vimbo", donation: 101 },

{ id: 41, first_name: "Jsandye", last_name: "Frend", email: "[email protected]", shirt_size: "XS", company_name: "Latz", donation: 156 },

{ id: 42, first_name: "Yevette", last_name: "Hacket", email: "[email protected]", shirt_size: "XL", company_name: "Lazzy", donation: 291 },

{ id: 43, first_name: "Hank", last_name: "Zebedee", email: "[email protected]", shirt_size: "L", company_name: "Gigashots", donation: 241 },

{ id: 44, first_name: "Jodie", last_name: "Stawell", email: "[email protected]", shirt_size: "S", company_name: "Jaxspan", donation: 262 },

{ id: 45, first_name: "Falito", last_name: "Karsh", email: "[email protected]", shirt_size: "S", company_name: "Mycat", donation: 239 },

{ id: 46, first_name: "Reginauld", last_name: "Purselowe", email: "[email protected]", shirt_size: "L", company_name: "Jabbersphere", donation: 11 },

{ id: 47, first_name: "Vida", last_name: "Tydd", email: "[email protected]", shirt_size: "S", company_name: "Quaxo", donation: 55 },

{ id: 48, first_name: "Anderea", last_name: "MacGiolla Pheadair", email: "[email protected]", shirt_size: "2XL", company_name: "Kwimbee", donation: 214 },

{ id: 49, first_name: "Bel", last_name: "Alway", email: "[email protected]", shirt_size: "S", company_name: "Voolia", donation: 107 },

{ id: 50, first_name: "Shell", last_name: "Baine", email: "[email protected]", shirt_size: "M", company_name: "Gabtype", donation: 171 },

];

// ==== 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(x => fullNames.push(x.first_name + ' ' + x.last_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 = [];
firstNamesAllCaps = runners.map(x => x.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 = [];
runnersLargeSizeShirt = runners.filter(x => x.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;
ticketPriceTotal = runners.reduce(function(x, y) {
        return (x + y.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.

// Persons belonging to education domain.
var eduPersons = runners.map(function(x) {
        if(x.email.endsWith('.edu')) {
        return 1; 
    } else {
        return 0;
    }
}).reduce((a, b) => (a + b))
console.log('People with eductional email: ' + eduPersons);

// Problem 2


// Problem 3


</script>
</body>
</html>

**************************************************

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