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    Javascript.info:
    :
    DanskEnglishEspaolFranaisIndonesiaItalianoTrkeOzbek

    : 5

    arr .

    unique(arr) arr .

    :

    function unique(arr) {
  /*   */
}

let values = ["Hare", "Krishna", "Hare", "Krishna",
  "Krishna", "Krishna", "Hare", "Hare", ":-O"
];

alert( unique(values) ); // Hare, Krishna, :-O

    : .

    : Set .

    sandbox .

    function unique(arr) {
  return Array.from(new Set(arr));
}

    sandbox.

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