Get the Intersection of two Arrays in JavaScript-Code Examples

// Get the intersection of two arrays in JavaScript

// Define a function to get the intersection of two arrays
function getIntersection(arr1, arr2) {
  // Use Set constructor to remove duplicates from arr1
  let set1 = new Set(arr1);

  // Use Set constructor to remove duplicates from arr2
  let set2 = new Set(arr2);

  // Use the spread operator (...) to convert the set to an array
  let intersection = [...set1].filter(x => set2.has(x));

  // Return the intersection
  return intersection;
}

// Define two arrays
let arr1 = [1, 2, 3, 4, 5];
let arr2 = [3, 4, 5, 6, 7];

// Get the intersection of the two arrays
let intersection = getIntersection(arr1, arr2);

// Print the intersection to the console
console.log(intersection); // [3, 4, 5]

// Get the intersection of two arrays in JavaScript

const array1 = ['a', 'b', 'c', 'd'];
const array2 = ['c', 'd', 'e', 'f'];

// Use the Set object to get the unique values
const uniqueValues = new Set([...array1, ...array2]);

// Get the intersection
const intersection = [...uniqueValues].filter(value => array1.includes(value) && array2.includes(value));

console.log(intersection); // Output: ['c', 'd']