JSFiddle - React, Tailwind, and code Playground

HTML

<div>
<a target="_blank" href="http://example.com">1</a>
<a target="_blank" href="http://example.de">2</a>
<a href="http://google.com">3</a>
</div>

<div id="liste">

</div>

JavaScript

a = document.getElementsByTagName('a');
liste = document.getElementById('liste');

for(var i = 0; i < a.length; i++) {
    var elem = a[i];
		if (elem.target === "_blank") {
      liste.innerHTML = liste.innerHTML + elem.href + "<br>"
    }
}