Answers for "how to filter 2 array of objects by field in javascript"

filter using two array of objects

const arr1 = [{id:'1',name:'A'},{id:'2',name:'B'},{id:'3',name:'C'},{id:'4',name:'D'}];
const arr2 = [{id:'1',name:'A',state:'healthy'},{id:'3',name:'C',state:'healthy'}];
const filterByReference = (arr1, arr2) => {
   let res = [];
   res = arr1.filter(el => {
      return !arr2.find(element => {
         return element.id === el.id;
      });
   });
   return res;
}
console.log(filterByReference(arr1, arr2));

filter js object array based on multiple parameters

var arr= [{id: "123", name: "Foo"},
          {id: "123", name: "Bar"},
          {id: "345", name: "Foo"},
          {id: "678", name: "FooBar"}
         ];

var name = 'Foo';
var id = '123';

arr = arr.filter(function(elem) {
  //return false for the element that matches both the name and the id
  return !(elem.id == id && elem.name == name)
});