Write Higher Order Arrow Functions(somebody please help)

JavaScript
1

Tell us what’s happening:
i need to know solution of given code :
how can we get squaredIntegers [16, 1764, 36]??

Your code so far

const realNumberArray= [4, 5.6, -9.8, 3.14, 42, 6, 8.34, -2];

const squareList = (arr) => {
“use strict”;
const squaredIntegers= array.filter(function(e) {return e%2 === 0;});
return squaredIntegers;
};

// test your code
const squaredIntegers = squareList(realNumberArray);
console.log(squaredIntegers);
2

First, you need to filter positive integers and then you need to calculate their square.

const realNumberArray = [4, 5.6, -9.8, 3.14, 42, 6, 8.34, -2];
const squareList = (arr) => {
  "use strict";
  // change code below this line
  const squaredIntegers = arr.filter(item => item > 0 && Number.isInteger(item)).map(item => item**2);
  // change code above this line
  return squaredIntegers;
};
// test your code
const squaredIntegers = squareList(realNumberArray);
console.log(squaredIntegers);