title: How create a Facebook share button without SDK or custom app id?
body: <p>I am looking at the <a href="https://developers.facebook.com/docs/sharing/reference/share-dialog">latest update to Facebook's share button.</a>
  It seems that it's no longer possible to include a share button in a website without including the Facebook javascript SDK, or having a Facebook app somewhere that provides you with an app id?</p>
  
  <p>Share button example 1 uses the Facebook SDK</p>
  
  <pre><code>FB.ui({
    method: 'share',
    href: 'https://developers.facebook.com/docs/',
  }, function(response){});
  </code></pre>
  
  <p>Share button example 2 uses a custom app id</p>
  
  <pre><code>https://www.facebook.com/dialog/share?
    app_id=145634995501895
    &amp;display=popup
    &amp;href=https%3A%2F%2Fdevelopers.facebook.com%2Fdocs%2F
    &amp;redirect_uri=https%3A%2F%2Fdevelopers.facebook.com%2Ftools%2Fexplorer
  </code></pre>
  
  <p>Question: how to build a plain and simple share button for Facebook with one line of code, that does not require libraries and app id's?</p>