{% include disqus.html %}

layout: default
comments: true
# other options

<div id="disqus_thread"></div>
<script type="text/javascript">
    var disqus_shortname = '<your-disqus-name>';
    var disqus_identifier = '{{ page.id }}';
...
</script>

<script type="text/javascript">
    /* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */
    var disqus_shortname = '<your-disqus-name>';
...
</script>

<a href="{{post.id}}" data-disqus-identifier="{{post.id}}">Leave a comment</a>

{% raw %}{% if page.comments != false %}
<div id="disqus_thread"></div>
<script type="text/javascript">
  var disqus_shortname  = '{{ site.disqus_shortname }}';
  var disqus_identifier = '{{ page.url }}';

  (function() {
    var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
    dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js';
    (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
  })();
</script>
<noscript>Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>
{% endif %}{% endraw %}

{% if site.disqus_shortname %}
  {% include disqus_comments.html %}
{% endif %}

disqus:
    shortname: <your disqus short name>

{% if page.comments %}
<div class="comments">
<div id="disqus_thread"></div>
<script type="text/javascript">
var disqus_shortname = '{{ site.disqus.shortname }}';
(function() {
var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js';
(document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq); })();
</script>
<noscript>Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>
</div>
{% endif %}

_layouts
    `- default.html
    `- post.html <- `layout: default` in the YAML header
_posts
    `- YYYY-MM-DD-my-post.md <- `layout: post` in the YAML header