I'm trying to use arr.filter() to find the missing element between two arrays, this has been answered plenty of times and i've seen threads like this one Finding missing element in two array for javascript that explain it actually very well. For some reason thought, i cant seem to get this to work.

This is my code

var x = [{Number:1},{Number:2},{Number:3}]
var y = [{Number:1},{Number:2}]

function getDifference(x,y){

    x.filter(function(object,index,arr){
        console.log(object,index,arr)
        if(!y.includes(object)){
            // print object
            console.log(object) // <-- Prints all 3, should just print the missing one.
        }
    })

}

getDifference(x,y)

Basically, it just needs to print out the missing object. Which in this case, is {Number:3} Instead, it prints every object.

I've tried with the code in the thread that i linked above, and still was having trouble. Not sure what i'm not understanding with it.