Simple Quiz Solutions

Converting Object to an Array

const object = {
    '1': 30,
    '2': 58
  };

function objectToArrConverter (obj) {
    if (Object.entries(obj).length === 0)
        return [];
    else {
        let arr = Object.entries(obj);
        console.log(arr);
        return arr;
      }
}

objectToArrConverter (object);

Removing Duplicates in an Array

const arr = ["John", "Taylor", "john"];

function removeDuplicates (array) {
    let noDuplicate = [];
    noDuplicate = array.filter((a, b) => array.indexOf(a) === b);
    console.log(noDuplicate);
    return noDuplicate;
}

removeDuplicates (arr);

Summing Object's Properties

const data = [
  { name: "John", age: 21, budget: 23000 },
  { name: "Steve", age: 32, budget: 40000 },
  { name: "Martin", age: 16, budget: 2700 },
];

function getBudgets(arr) {
  let sum = 0;
  arr.forEach((object) => {
    if (typeof object.budget === "number") sum += object.budget;
  });
  console.log(sum);
  return sum;
}

getBudgets(data);