JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://connect.soundcloud.com/sdk.js"></script>
<button onClick="myfb()">Share</button>

CSS

#fb{
    background-image: url(https://cdn3.iconfinder.com/data/icons/free-social-icons/67/facebook_square-128.png);
    width:128px;
    height:128px;
}

JavaScript

window.fbAsyncInit = function() {
        FB.init({
          appId      : '783814654983006',
          xfbml      : true,
          version    : 'v2.0'
        });
      };

      (function(d, s, id){
         var js, fjs = d.getElementsByTagName(s)[0];
         if (d.getElementById(id)) {return;}
         js = d.createElement(s); js.id = id;
         js.src = "//connect.facebook.net/en_US/sdk.js";
         fjs.parentNode.insertBefore(js, fjs);
       }(document, 'script', 'facebook-jssdk'));

function myfb(){
    FB.ui({
  method: 'share',
  href: ,
}, function(response){});
}