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Copy pathworksheet.js
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123 lines (99 loc) · 3.2 KB
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const characters = [
{
name: 'Luke Skywalker',
height: 172,
mass: 77,
eye_color: 'blue',
gender: 'male',
},
{
name: 'Darth Vader',
height: 202,
mass: 136,
eye_color: 'yellow',
gender: 'male',
},
{
name: 'Leia Organa',
height: 150,
mass: 49,
eye_color: 'brown',
gender: 'female',
},
{
name: 'Anakin Skywalker',
height: 188,
mass: 84,
eye_color: 'blue',
gender: 'male',
},
];
//***======================MAP=====================***
//1. Get array of all names
const allNames = characters.map(character=>character.name)
console.log(allNames);
//2. Get array of all heights
const height = characters.map(character=>character.height);
console.log(height);
//3. Get array of objects with just name and height properties
const nameAndHeight = characters.map((character)=>({
name : character.name,
height: character.height,}));
console.log(nameAndHeight);
//4. Get array of all first names
const firstName = characters.map(character=>character.name.split(' ')[1]);
console.log(firstName);
//***===================REDUCE================================***
//1. Get total mass of all characters
const totalMass = characters.reduce((acc,cur) => {
// console.log('The value of accumulator: ', acc);
// console.log('The value of currentValue: ', cur);
return acc + cur.mass
}, 0);
console.log(totalMass);
//2. Get total height of all characters
const totalHeight = characters.reduce((acc, curr) => acc + curr.height, 0);
console.log(totalHeight);
//3. Get total number of characters by eye color
const characterByEyeColor = characters.reduce((acc, curr) => {
const color = curr.eye_color;
if(acc[color]){
acc[color] = acc[color] +1;
}
else{
acc[color] = 1;
}
return acc;
}, {})
console.log(characterByEyeColor);
//4. Get total number of characters in all the character names
const totalNumberOfCharacters = characters.reduce((acc, curr) => acc + curr.name.length, 0);
console.log(totalNumberOfCharacters);
//***FILTER***
//1. Get characters with mass greater than 100
// const greater100Characters = characters.filter(character=>character.mass>100);
// console.log(greater100Characters);
//2. Get characters with height less than 200
// const shorterCharacters = characters.filter(character=>character.height< 200);
// console.log(shorterCharacters);
//3. Get all male characters
// const maleCharters = characters.filter(male=>male.gender === "male");
// console.log(maleCharters);
//4. Get all female characters
// const femaleCharters = characters.filter(female=>female.gender === "female");
// console.log(femaleCharters);
//***SORT***
//1. Sort by mass
//2. Sort by height
//3. Sort by name
//4. Sort by gender
//***EVERY***
//1. Does every character have blue eyes?
//2. Does every character have mass more than 40?
//3. Is every character shorter than 200?
//4. Is every character male?
//***SOME***
//1. Is there at least one male character?
//2. Is there at least one character with blue eyes?
//3. Is there at least one character taller than 210?
//4. Is there at least one character that has mass less than 50?