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destructuring.js
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destructuring.js
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// Destructing inside function
// const rect = {
// width: 15,
// height: 15
// };
// const calculate = ({ width, height }) => {
// return 2 * (width + height);
// };
// const calculate = result => {
// return result.width + result.height;
// };
// console.log(calculate(rect));
// const todoList = [
// {
// task: "Prepare JS Test",
// time: "4/1/2020 8:30",
// completed: true
// },
// {
// task: "Give JS Test",
// time: "4/1/2020 10:00",
// completed: false
// },
// {
// task: "Assess Test Result",
// time: "4/1/2020 1:00",
// completed: false
// }
// ];
// for (const { task, time, completed } of todoList) {
// console.log(task, time, completed);
// }
// const countries = [
// "Germany",
// "France",
// "Belgium",
// "Finland",
// "Sweden",
// "Norway",
// "Denmark",
// "Iceland"
// ];
// const [gem, fran, ...all] = countries;
// console.log(gem, fran, all);
// const evens = [0, 2, 4, 6, 8, 10];
// const odds = [1, 3, 5, 7, 9];
// const allNumbers = [...evens, ...odds];
// const evenNumbers = [...evens];
// const oddNumbers = [...odds];
// console.log(evenNumbers);
// console.log(allNumbers);
// const user = {
// name: "Asabeneh",
// title: "Programmer",
// country: "Finland",
// city: "Helsinki"
// };
// const modify = { ...user, country: "UK" };
// console.log(modify);
// const users = [
// {
// name: "Brook",
// scores: 75,
// skills: ["HTM", "CSS", "JS"],
// age: 16
// },
// {
// name: "Alex",
// scores: 80,
// skills: ["HTM", "CSS", "JS"],
// age: 18
// },
// {
// name: "David",
// scores: 75,
// skills: ["HTM", "CSS"],
// age: 22
// },
// {
// name: "John",
// scores: 85,
// skills: ["HTML"],
// age: 25
// },
// {
// name: "Sara",
// scores: 95,
// skills: ["HTM", "CSS", "JS"],
// age: 26
// },
// {
// name: "Martha",
// scores: 80,
// skills: ["HTM", "CSS", "JS"],
// age: 18
// },
// {
// name: "Thomas",
// scores: 90,
// skills: ["HTM", "CSS", "JS"],
// age: 20
// }
// ];
// // for (const { name, scores, skills, age } of users) {
// // console.log(name, scores, skills, age);
// // }
// const constants = [2.72, 3.14, 9.81, 37, 100];
// const countries = ["Finland", "Estonia", "Sweden", "Denmark", "Norway"];
// const [e, pi, gravity, humanBodyTemp, waterBoilingTemp] = constants;
// const [fin, est, sw, den, nor] = countries;
// console.log(Object.keys(users));
// const result = () =>
// users.filter(r => {
// return r.skills.length == 3;
// });
// console.log(result());
const students = [
["David", ["HTM", "CSS", "JS", "React"], [98, 85, 90, 95]],
["John", ["HTM", "CSS", "JS", "React"], [85, 80, 85, 80]]
];
// const [name, skills, scores] = students;
// const convertArrayToObject = arr => {
// for (const [name, skills, scores] of arr) {
// return [{ name, skills, scores }];
// }
// };
// function convertArrayToObject(arr) {
// return arr.map(el => {
// return {
// name: el[0],
// skills: el[1],
// scores: el[2]
// };
// });
// }
const convertArrayToObject = arr => {
let r = [];
for (const [name, skills, scores] of students) {
r.push({ name, skills, scores });
}
return r;
};
console.log(convertArrayToObject(students));
// for (const [name, skills, scores] of students) {
// console.log([{ name, skills, scores }]);
// }
// const person = {
// name: "Eka",
// add: "Jakarta"
// };
// function introduce({ name, add }) {
// console.log(`I am ${name} and live in ${add}`);
// }
// introduce(person);