Question: I have an array of people objects (20 in all) from a json file

```
{
      "id": "1",
      "departments": "1",
      "name": "Jim Smith",

},

```

I want to filter ids 1, 5, and 10

```
let values = [1,5,10];

let filtered =this.people.filter(function(person) {
    return values.some(function(val) { return person.id === val });
})

console.log(filtered);

```

I keep getting a blank value in filtered, where am I going wrong? It looks close.

Answer: 
Loose typing rules:

```
"1" == 1
"1" !== 1

```

Changing your `===` to a `==` is one way to fix it.
It's because the value is integer, while the persion.id is String.

you can use 

```
return person.id === val.toString()

```

or 

```
return person.id == val

```

And I prefer:

```
let filtered2 = this.people.filter(function(person) {
  return person.id in values;
})
console.log(filtered2);

```