javascript map return array with distinc values
//ES6
let array = [
{ "name": "Joe", "age": 17 },
{ "name": "Bob", "age": 17 },
{ "name": "Carl", "age": 35 }
];
array.map(item => item.age)
.filter((value, index, self) => self.indexOf(value) === index)
> [17, 35]javascript get unique values from key
const unique = [...new Set(array.map(item => item.age))];Copyright © 2021 Codeinu
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