JSFiddle - React, Tailwind, and code Playground

HTML

<div class="pinterest-block">
    <a class="test" data-pin-id="other" data-pin-href="//www.pinterest.com/pin/452963674997859907/repin/x/">Test</a>

<a data-pin-id="other" data-pin-href="//www.pinterest.com/pin/452963674997859907/repin/x/">Test 2</a>

<a data-pin-id="other" data-pin-href="//www.pinterest.com/pin/452963674997859907/repin/x/">Test 3</a>
    
</div>

JavaScript

window.setTimeout(function (){
    $('.pinterest-block a[data-pin-href]').each(function(){
        var newurl = $(this).attr('data-pin-href').replace('repin/x/','');
        $(this).attr('data-pin-href', newurl);
    });
}, 1500);