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42 changes: 38 additions & 4 deletions assignments/array-methods.js
Original file line number Diff line number Diff line change
Expand Up @@ -58,28 +58,62 @@ const runners = [
// ==== 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(function(items){
return fullNames.push(`${items.first_name} ${items.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 = [];

let firstNamesAllCaps =
runners.map(function(element){
return element.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 = [];
let runnersLargeSizeShirt =
runners.filter(function(element){
return element.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;
let ticketPriceTotal =
runners.reduce(function(accumulator, item){
return accumulator + 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 create and then solve 3 unique problems using one or many of the array methods listed above.

// Problem 1
//In order to send out thank you letters to everyone make an array of everyone's first name and email address.
let nameEmail = [];
runners.forEach(function(items){
return nameEmail.push(`${items.first_name} , ${items.email}`);
})
console.log(nameEmail);


// Problem 2
//A special email is going to going to be sent out for those who donated more than $100 so use the .filter method to determine who did in the array
let bigSpender =
runners.filter(function(element){
return element.donation > 100;
})
console.log(bigSpender);


// Problem 3
//To go along with the uppercased names above, use the .map function to get the last names into uppercase

// Problem 3
let lastNamesAllCaps =
runners.map(function(element){
return element.last_name.toUpperCase();
})
console.log(lastNamesAllCaps);
30 changes: 30 additions & 0 deletions assignments/callbacks.js
Original file line number Diff line number Diff line change
Expand Up @@ -41,24 +41,54 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];

function getLength(arr, cb) {
// getLength passes the length of the array into the callback.
cb(arr.length);
}
getLength(items,(lengthOfList) =>{
console.log(lengthOfList);
});

function last(arr, cb) {
// last passes the last item of the array into the callback.
cb(arr[3]);
}
last(items, (lastItem) =>{
console.log(lastItem);
});

function sumNums(x, y, cb) {
// sumNums adds two numbers (x, y) and passes the result to the callback.
return cb(x, y);
}
const add = (x , y) => {
return x + y;
}
console.log(sumNums(2, 3, add));




function multiplyNums(x, y, cb) {
// multiplyNums multiplies two numbers and passes the result to the callback.
return cb(x, y);
}
const multiply = (x, y) => {
return x * y;
}
console.log(multiplyNums(2,3, multiply));





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.
return cb(item, list);
}
const con = (item, list) =>{
return list.includes(item);
}
console.log(contains('Pencil',items, con));

/* STRETCH PROBLEM */

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5 changes: 4 additions & 1 deletion assignments/closure.js
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,10 @@
// that manipulates variables defined in the outer scope.
// The outer scope can be a parent function, or the top level of the script.


function game(favGame){
console.log(`${favGame} is my favorite game`);
}
game('Kingdom Hearts 2');
/* STRETCH PROBLEMS, Do not attempt until you have completed all previous tasks for today's project files */


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