JavaScript get elements from an object array that are not in another

Question

I\'m new in JavaScript programming and I have two object arrays that have the following structure:

myFirstObjArray = [{foo: 1, bar: 1}, {foo: 3, bar: 3}, {fo         


        

Answer 1

You can create a reusable function to prevent code duplication. Just switch over to the function parameter. Also note that the inner loop is simple for loop so that we can use break and avoid unnecessary checks.

var firstArray = [];
var secondArray = [];
var myFirstObjArray = [{foo: 1, bar: 1}, {foo: 3, bar: 3}, {foo: 4, bar: 5}];
var mySecondObjArray = [{foo: 2}, {foo: 4}, {foo: 5}];

function difference(myFirstObjArray, mySecondObjArray){
  var firstArray = [];
  myFirstObjArray.forEach((obj)=>{
   var match = false;
   for(var i=0; i