<script src="https://cdnjs.cloudflare.com/ajax/libs/react/17.0.2/umd/react.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
<script type="text/babel">
const { useEffect, useState } = React; const [array] = useState([1, 2, 3, 3, 4, 5, 5, "a", "b", "c", "c"]);
const [set, setSet] = useState(new Set());
const convertedSet = new Set(array);
<div className="container">
<h3>React Js Convert Array to Set</h3>
<p>{JSON.stringify(array)}</p> <p>{JSON.stringify(Array.from(set))}</p> ReactDOM.render(<App />, document.getElementById("app"));