I am working on an array which is like this:

```js
var arr = [
  {floor: '1', id: '10165', label: 'Elutuba/Köök'},
  {floor: '1', id: '10166', label: 'Tuba 1'},
  {floor: '1', id: '10167', label: 'Vannituba'},
  {floor: '2', id: '10167', label: 'Vannituba'}
];

```

Now i want to compare the floor items here. If all the floor value is same, then it should return `true` and if there are multiple values like '1' & '2' in this array, it should return `false`.

Here's what i have tried so far

```js
var arr = [
  {floor: '1', id: '10165', label: 'Elutuba/Köök'},
  {floor: '1', id: '10166', label: 'Tuba 1'},
  {floor: '1', id: '10167', label: 'Vannituba'},
  {floor: '2', id: '10167', label: 'Vannituba'}
];

for (let i=0; i< arr.length; i++){
    for (let j=1; j< arr.length; j++){
       if( arr[i].floor !== arr[j].floor){
            console.log('found');
       }else{
            console.log('Not found');
       }
    }
}
```

I know this is nowhere close to the solution. But i'm stuck.