JAVASCRIPT

object intersection javascript

var firstObject = { x: 0, y: 1, z: 2, a: 10, b: 20, e: 30 },
    secondObject = { x: 0, y: 1, z: 2, a: 10, c: 20, d: 30 };

function intersection(o1, o2) {
    return Object.keys(o1).filter({}.hasOwnProperty.bind(o2));
}

document.write('<pre>' + JSON.stringify(intersection(firstObject, secondObject), 0, 4) + '</pre>');
 Run code snippet

intersection array of object javascript

let data = [
    {
      id: "1",
      name: "test"
    },
    {
      id: "2",
      name: "test"
    }
  ];
  let data2 = [
    {
      id: "1",
      name: "test"
    },
    {
      id: "3",
      name: "test"
    }
  ];
  const result = data.filter((a) => data2.some((b) => a.id === b.id));
  console.log(result);