find intersection of two arrrays javascript code example

Example 1: javascript do arrays intersect

let intersection = arrA.filter(x => arrB.includes(x));

Example 2: js array intersection object

const arr1 = [{ id: 1 }, { id: 2 }]
const arr2 = [{ id: 1 }, { id: 3 }]
const intersection = arr1.filter(item1 => arr2.some(item2 => item1.id === item2.id))
// intersection => [{ id: 1 }]