JS tasks

tasks.js

// Zadanie 1 
const data1 = [1, 2, 3, 4, 4, 2, 1, 3];

console.log([...new Set(data1)]);

// Zadanie 2
const data2 = [{a: 1, b: 2},{a: 5, b: 8},{a: "aaaa", c: "aaaaa"}];

console.log(data2.map(i => i.a));

const data3 = [1, 2, 3, 4];

console.log(data3.map(i => i*2));

const data4 = [1, 2, 3, 4, 5, 6];

console.log(data4.filter(i => i % 2 === 0));

const data5 = [1, 2, 3, 4, 5, 6];

console.log(data5.filter(i => i % 2).reduce((acc, i) => acc + i));

const data6 = {who: "Organization", why: "Harmony", how: "Human"};

console.log(Object.keys(data6).map(key => ({key, value: data6[key] })));

const data7 = [{name: "animal", age: 3},{name: "human", age: 10}]

console.log(
  data7.reduce((acc, i) => ({...acc, [i.name]: i.age}), {})
)

const data8 = {key1: 1,key2: "tar",key3: [{name: "animal", age: 3},{name: "human", age: 10}]};

console.log(
  Object.keys(data8).map(i => ({key: i, value: data8[i]}))
)