JSFiddle - React, Tailwind, and code Playground

HTML

<a href="https%3A%2F%2Fwww.flickr.com%2Fphotos%2Fkentbrew%2F6851755809%2F" data-image="https%3A%2F%2Fc4.staticflickr.com%2F8%2F7027%2F6851755809_df5b2051c9_b.jpg" data-desc="Pinterest Photo" class="linkPinIt">
    Pin it!
</a>

JavaScript

$('.linkPinIt').click(function() {
    var url = $(this).attr('href');
    var media = $(this).attr('data-image');
    var desc = $(this).attr('data-desc');
    window.open("//www.pinterest.com/pin/create/button/"+
    "?url="+url+
    "&media="+media+
    "&description="+desc,"_blank", "toolbar=no, scrollbars=no, resizable=no, top=0, right=0, width=750, height=320");
    return false;
});