JSFiddle - React, Tailwind, and code Playground

HTML

<button id="linkchecker">CLick Here</button>

<p><a href="link1.html">Link 1</a></p>
<p><a href="link2.html">Link 2</a></p>
<p><a href="link3.html">Link 3</a></p>
<p><a href="http://www.bing.com">Bing</a></p>
<p><a href="http://www.google.com">Google</a></p>
<p><a href="link4.html">Link 4</a></p>

JavaScript

function checkLinks( searchString ) {
    var url;
    $('a').each( function ( ) {
        if(  $(this).attr('href').indexOf(searchString) != -1 ) {
            url = $(this).attr('href');
            return false;
        }
    });
    return url;
}
 

$( function ( ) {
    $('#linkchecker').click( function( ) {
        alert( checkLinks( 'google.com' ) );
    });
});