how to get value in array object value using for loop in javascript

1const myArray = [{x:100}, {x:200}, {x:300}];
2
3const newArray= myArray.map(element => element.x);
4console.log(newArray); // [100, 200, 300]

1const people = [ {name: "john", age:23},
2                {name: "john", age:43},
3                {name: "jim", age:101},
4                {name: "bob", age:67} ];
5
6const john = people.find(person => person.name === 'john');
7console.log(john);

1const myArray = [{x:100}, {x:200}, {x:300}];
2
3const sum = myArray.map(element => element.x).reduce((a, b) => a + b, 0);
4console.log(sum); // 600 = 0 + 100 + 200 + 300
5
6const average = sum / myArray.length;
7console.log(average); // 200

1const people = [
2    {name: 'John', age: 23}, 
3    {name: 'Andrew', age: 3}, 
4    {name: 'Peter', age: 8}, 
5    {name: 'Hanna', age: 14}, 
6    {name: 'Adam', age: 37}];
7
8const anyAdult = people.some(person => person.age >= 18);
9console.log(anyAdult); // true

1const people = [
2  { name: "John", age: 21 },
3  { name: "Peter", age: 31 },
4  { name: "Andrew", age: 29 },
5  { name: "Thomas", age: 25 }
6];
7
8let sortByAge = people.sort(function (p1, p2) {
9  return p1.age - p2.age;
10});
11
12console.log(sortByAge);