const myArray = [{x:100}, {x:200}, {x:300}]; const newArray= myArray.map(element => element.x); console.log(newArray); // [100, 200, 300]
const people = [ {name: "john", age:23}, {name: "john", age:43}, {name: "jim", age:101}, {name: "bob", age:67} ]; const john = people.find(person => person.name === 'john'); console.log(john);
const myArray = [{x:100}, {x:200}, {x:300}]; const sum = myArray.map(element => element.x).reduce((a, b) => a + b, 0); console.log(sum); // 600 = 0 + 100 + 200 + 300 const average = sum / myArray.length; console.log(average); // 200
const people = [ { name: "John", age: 21 }, { name: "Peter", age: 31 }, { name: "Andrew", age: 29 }, { name: "Thomas", age: 25 } ]; let sortByAge = people.sort(function (p1, p2) { return p1.age - p2.age; }); console.log(sortByAge);
const people = [ {name: 'John', age: 23}, {name: 'Andrew', age: 3}, {name: 'Peter', age: 8}, {name: 'Hanna', age: 14}, {name: 'Adam', age: 37}]; const anyAdult = people.some(person => person.age >= 18); console.log(anyAdult); // true