GeezerVison

The World Wide Web, restored to 800 pixels of glory.

GeezerVison is showing da.javascript.info — Find gennemsnitsalderen

Find gennemsnitsalderen

vigtighed: 4

Skriv funktionen getAverageAge(users), der modtager et array af objekter med egenskaben age og returnerer gennemsnitsalderen.

Formlen for gennemsnittet er (age1 + age2 + ... + ageN) / N.

For eksempel:

let john = { name: "John", age: 25 };
let pete = { name: "Pete", age: 30 };
let mary = { name: "Mary", age: 29 };

let arr = [ john, pete, mary ];

alert( getAverageAge(arr) ); // (25 + 30 + 29) / 3 = 28

function getAverageAge(users) {
  return users.reduce((prev, user) => prev + user.age, 0) / users.length;
}

let john = { name: "John", age: 25 };
let pete = { name: "Pete", age: 30 };
let mary = { name: "Mary", age: 29 };

let arr = [ john, pete, mary ];

alert( getAverageAge(arr) ); // 28

You are visitor 01402503 — GeezerVison does not store the pages you look up.
Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required.