Click button to load Disqus

page.html

<a class="btn btn-default" href="javascript:disqus.load();">点击以加载 Disqus</a>

script.js

var disqus = {
    load: function disqus() {
        // edit this to your short name
        var disqus_shortname = 'blessing-studio';

        if (typeof DISQUS !== 'object') {
            // load Disqus
            (function () {
                var s = document.createElement('script'); s.async = true;
                s.type = 'text/javascript';
                s.src = '//' + disqus_shortname + '.disqus.com/embed.js';
                (document.getElementsByTagName('HEAD')[0] || document.getElementsByTagName('BODY')[0]).appendChild(s);
            }());

            // remove the button after loading
            $('.disqus-notice').remove(); 
        }
    }
};