1// usage example:
2var myArray = ['a', 1, 'a', 2, '1'];
3var unique = myArray.filter((v, i, a) => a.indexOf(v) === i); 
4
5// unique is ['a', 1, 2, '1']

1const myArray = ['a', 1, 'a', 2, '1'];
2const unique = [...new Set(myArray)]; // ['a', 1, 2, '1']

1const unique = [...new Set(array.map(item => item.age))];