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31 changes: 30 additions & 1 deletion assignments/array-methods.js
Original file line number Diff line number Diff line change
Expand Up @@ -56,28 +56,57 @@ 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(element => {
let names = element.first_name +" " + element.last_name;
fullName.push(names);
}
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 = [];
allCaps = runners.map(name => {
name.first_name = name.first_name.toUpperCase();
return name;
}
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 = runners.filter(shirts = {
if(shirts.shirt_size === L) {
return true;
}
}
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 = money.reduce((total,ticket) =>
total + ticket.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
let google = [];
runners.forEach(mail = > {
google.push(mail.email);
}
console.log(google)

// Problem 2
let company = [];
company = runners.map(logo => {
return logo.company_name;
}
console.log(company);

// Problem 3
// Problem 3
let price = [];
price = runners.filter(tickets => tickets.donations <== 100);
console.log(price);
21 changes: 18 additions & 3 deletions assignments/callbacks.js
Original file line number Diff line number Diff line change
Expand Up @@ -24,25 +24,40 @@ 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.length-1);
}

function sumNums(x, y, cb) {
// sumNums adds two numbers (x, y) and passes the result to the callback.
}
const add = (x,y) => {
return cb(x + y);
}
}
console.log(sumNums);


function multiplyNums(x, y, cb) {
// multiplyNums multiplies two numbers and passes the result to the callback.
const product = (x, y) => {
return cb(x * y);
}
console.log(multiplyNums);
}

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(item[] === list) {
return cb;
} else {
return false;
}
console.log(contains);
/* STRETCH PROBLEM */

function removeDuplicates(array, cb) {
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7 changes: 7 additions & 0 deletions assignments/closure.js
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,13 @@
const counter = () => {
// Return a function that when invoked increments and returns a counter variable.
};
var count = 0;
const up = () => {
return count += 1;
}
return up;

const newCounter = counter();
// Example usage: const newCounter = counter();
// newCounter(); // 1
// newCounter(); // 2
Expand Down