JSFiddle - React, Tailwind, and code Playground

HTML

<div data-id="001">Hello</div>
<div data-id="001">World</div>
<div data-id="002">Keep</div>
<div data-id="002">Only</div>
<div data-id="002">Unique</div>
<div data-id="003">Last</div>
<div data-id="003">Word</div>
<div data-id="004">Please</div>

<br><br>
<p>Result should be: World Unique Word Please</p>

JavaScript

var found = {};
$('[data-id]').each(function(){
    var $this = $(this);
    if(found[$this.data('id')]){
         $this.remove();   
    }
    else{
         found[$this.data('id')] = true;   
    }
});