Answers for "return only id if found array of objects js"

javascript get array object by id

myArray.find(x => x.id === '45').foo;

search an array of objects with specific object property value

// MDN Ref:
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find

var result = jsObjects.find(obj => {
  return obj.b === 6
});