react list keep only duplicates code example

Example: remove duplicate id in list react jsx

<div id="root">
</div>
<script type="text/es2015">
function MyFunction() {
  var myArray = ['100', '120', '130', '140', '500', '100', '120', '140'];
 
  var result = [];
   result = myArray.filter(function(item, pos, self) {
    return self.indexOf(item) == pos;
})
 var items = result.map((item) =>
  item+','
);
  return (
    <p>{items}</p>
  );
}

ReactDOM.render(
  <MyFunction />,
  document.getElementById('root')
);
</script>