olddustysocksunderthecouch

const printAuthorsName = ({name}) => {
    console.log(name);
}
printAuthorsName({name : ’Douglas Adams’, age : 42}); // logs: ’Douglas Adams’)

olddustysocksunderthecouch

const printAuthorsName = (personObj) => {
    console.log(personObj.name);
}
printName({name : ’Douglas Adams’, age : 42}); // logs: ‘Douglas Adams’

olddustysocksunderthecouch

const myObj = {
    name: ‘Douglas Adams’,
    age: 42
}
const {name} = myObj;
console.log(name); // logs: ‘Douglas Adams’
console.log(age);// logs: undefined
console.log(myObj);// logs: {name:’Douglas Adams’, age:42}

olddustysocksunderthecouch

const array = [1,2,3];
const [a, b] = array;
console.log(a); // logs: 1
console.log(b); // logs:  2
console.log(array); // logs: [1,2,3]

olddustysocksunderthecouch

{
    name: ‘Douglas Adams’,
    age: 42
}

olddustysocksunderthecouch

const oldObject = {
    name: ‘Douglas Adams’
};
const newObject = {
    …oldObject,
    age: 42
};

olddustysocksunderthecouch

const oldArray = [1, 2, 3];
const newArray = […oldArray, 4, 5]; // This now is[1, 2, 3, 4, 5];

olddustysocksunderthecouch

class Human{
    species = ‘human’;
}

const person = new Person();
class Person extends Human{
    name = ‘Douglas Adams’;
    printAuthorsName = () => {
        console.log(this.name);
    }

olddustysocksunderthecouch

class Person{
    name = ‘Douglas Adams’;
    printAuthorsName = () => {
    console.log(this.name);
    }
}
const person = new Person();
person.printAuthorsName();

olddustysocksunderthecouch

class Person{ 
    name = ‘Douglas Adams’;
    printAuthorsName () {
        console.log(this.name); // this is required to refer to the class!
    }
}
const person = newPerson();
person.printAuthorsName();