const object = [
{id: '11', name: 'ron' , surname: 'lesner' , group: 'A'},
{id: '12', name: 'don' , surname: 'lesner' , group: 'B'},
{id: '13', name: 'ton' , surname: 'lesner' , group: 'A'}
];
const found = object.find(item => item.id === '11').id;
console.log(found)