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Pao S object arrays drills #101

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Pao S object arrays drills
Powwow84 Mar 14, 2023
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Pao onject arrays drills hw
Powwow84 Mar 14, 2023
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86 changes: 80 additions & 6 deletions exercises.js
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Original file line number Diff line number Diff line change
Expand Up @@ -14,8 +14,14 @@ const album1 = {
// 1. Retrieve the string "Sire" from album1, and save it in a sensibly named
// variable.

let lables = album1.albumDetails.label
console.log(lables)

// 2. Change the title of album1 from "Talking Heads" to "Talking Heads: 77"

album1.title = "Talking Heads: 77"
console.log(album1.title)

const album2 = {
title: "More Songs About Buildings and Food",
albumDetails: {
Expand All @@ -38,9 +44,16 @@ const album3 = {
// album3's formats
// Check out the Array.push method!

console.log(album2.albumDetails.formats)
album3.albumDetails.formats.unshift("LP")
console.log(album3)

// 4. Change the release date of album3 from a string into a Date object
// Look ahead to album4 for a clue!

album3.albumDetails.released = new Date ("August 3, 1979")
console.log(album3)

const album4 = {
title: "Remain in Light",
albumDetails: {
Expand All @@ -51,6 +64,9 @@ const album4 = {

// 5. Add the label "Sire" to album4's details

album4.albumDetails.label = "Sire"
console.log(album4)

const album5 = {
title: "Speaking in Tongues",
albumDetails: {
Expand All @@ -61,6 +77,9 @@ const album5 = {

// 6. Add a 'formats' array to album 5 and add "CD", "Cassette", and "LP"

album5.formats = ['CD', 'Cassette', 'LP']
console.log(album5)

const album6 = {
title: "Little Creatures",
albumDetails: {
Expand All @@ -73,6 +92,9 @@ const album6 = {
// 7. Make the label "emi" in album6 all uppercase
// google how to make a string uppercase in js!

album6.albumDetails.labels[1] = album6.albumDetails.labels[1].toLocaleUpperCase()
console.log(album6)

const album7 = {
title: "True Stories",
albumDetails: {
Expand All @@ -86,6 +108,9 @@ const album7 = {
// "Sire, EMI" into the array: ["Sire", "EMI"]
// google js array split!

album7.albumDetails.labels = album7.albumDetails.labels.split(",")
console.log(album7)

/////////////////////////////////////////////////////
// Part 2: More Tasks About Datatypes and Structures
/////////////////////////////////////////////////////
Expand All @@ -99,6 +124,7 @@ const album8 = {
}
}


const talkingHeadsAlbums = [
album1,
album2,
Expand All @@ -107,22 +133,28 @@ const talkingHeadsAlbums = [
album5,
album6,
album7,
album8
album8,
]

// 1. Create an object literal called `band`.

const band = {}

// 2. Give it the property `name` and set it to "Talking Heads"

band.name = 'Talking Heads'
console.log(band)
// 3. Give it the property `members` and set it to an array with a single
// string, "David Byrne", in it.

band.members = 'David Byrn'
console.log(band)
// 4. Give it the property `albums` and set it to the array stored in the
// variable talkingHeadsAlbums

band.albums = talkingHeadsAlbums
console.log(band)
// 5. Add "Tiny Weymouth", "Chris Franz" and "Jerry Harrison" to the members
// array.

band.members = ['David Byrn', 'Tiny Weymouth', 'Chris Franz', 'Jerry Harrison']
console.log(band)
////////////////////////////////////////////////
// Part 3: Conditional Logic
////////////////////////////////////////////////
Expand All @@ -132,10 +164,17 @@ const talkingHeadsAlbums = [
// "Talking heads didn't have much output." Use the array of albums
// talkingHeadsAlbums above.

talkingHeadsAlbums.length > 5 ? console.log("Talking Heads were a prolific band") : console.log("Talking heads didn't have much output.")

// 2. Write a conditional to check if the number of albums in
// talkingHeadsAlbums is odd or even, and then console.log
// "The number X is odd" or "The number X is even" with X being
// the number of albums.
if(talkingHeadsAlbums.length % 2 === 0 && talkingHeadsAlbums.length !== 0 ) {
console.log(`The number ${talkingHeadsAlbums.length} is even`)
} else if(talkingHeadsAlbums.length % 2 !== 0 && talkingHeadsAlbums.length !== 0 ) {
console.log(`The number ${talkingHeadsAlbums.length} is odd`)
}

// 3. Write conditionals to check if the number of albums in
// talkingHeadsAlbums is divisible by either 2 or 3, and then
Expand All @@ -146,19 +185,54 @@ const talkingHeadsAlbums = [
// - "The number Y is not divisible by 2 or 3",
//
// with Y being the number of albums.
switch(true) {
case talkingHeadsAlbums.length % 2 === 0 && talkingHeadsAlbums.length % 3 !== 0 && talkingHeadsAlbums.length !== 0:
console.log(`The number ${talkingHeadsAlbums.length} is divisible by 2`)
break;
case talkingHeadsAlbums.length % 3 === 0 && talkingHeadsAlbums.length % 2 !== 0 && talkingHeadsAlbums.length !== 0:
console.log(`The number ${talkingHeadsAlbums.length} is divisible by 3`)
break;
case talkingHeadsAlbums.length % 2 === 0 && talkingHeadsAlbums.length % 3 === 0 && talkingHeadsAlbums.length !== 0:
console.log(`The number ${talkingHeadsAlbums.length} is divisible by 2 and 3`)
break;
case talkingHeadsAlbums.length % 2 !== 0 && talkingHeadsAlbums.length % 3 !== 0 && talkingHeadsAlbums.length !== 0:
console.log(`The number ${talkingHeadsAlbums.length} is not divisible by 2 or 3`)
break;
}


// 4. Check your logic above against the numbers: 0, 1, 2, 6, 7, and 9.
// Make sure it always works!

console.log("it all worked checked with the above")

/////////////////////////////////////////////////////
// Part 4: For Loops
/////////////////////////////////////////////////////

// 1. Use a for loop to print out the name of each Talking Heads album

for (i = 0 ; i < talkingHeadsAlbums.length ; i++) {
console.log(talkingHeadsAlbums[i].title)
}

for (album in talkingHeadsAlbums) {
console.log(talkingHeadsAlbums[album].title)
}
// 2. Create a variable called `sireTally`, and set it to the integer value 0.
// Then use a for-loop to go through all the Talking Heads albums,
// incrementing sireTally if the album was released under the "Sire" label.
//
// Warning: some albums have a property `.label`, which is a string, and some
// have `.labels`, which is an Array!

let sireTally = 0;

for (let i = 0; i < talkingHeadsAlbums.length; i++) {
if (talkingHeadsAlbums[i].albumDetails.labels = "Sire") {
sireTally++;
}
else if(talkingHeadsAlbums[i].albumDetails.label = "Sire") {
sireTally++;
}
}
console.log(sireTally);