1myArray.findIndex(x => x.id === '45');

1const found = accesses.find(x => x.Resource === 'Clients');
2console.log(found)

1function getByValue2(arr, value) {
2
3  var result  = arr.filter(function(o){return o.b == value;} );
4
5  return result? result[0] : null; // or undefined
6
7}
8