Disqus click-to-load

disqus ctl embeds.js

/*******************************************************************************
    uBlock Origin - a browser extension to block requests.
    Copyright (C) 2019-present Raymond Hill
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see {http://www.gnu.org/licenses/}.
    Home: https://github.com/gorhill/uBlock
*/
// Source code as in https://github.com/gorhill/uBlock/commit/7c22a312945a2bff41a2b5696a7e54f1c4c01cf2

/// disqus_embed.js
(function() {
    'use strict';
    const p = document.getElementById(window.disqus_container_id || 'disqus_thread');
    if ( p === null ) { return; }
    const b = document.createElement('button');
    b.textContent = 'Disqus blocked by uBlock Origin: click to unblock';
    b.type = 'button';
    p.appendChild(b);
    const loadDisqus = function(ev) {
        b.remove();
        let disqusScript =
            document.querySelector('script[src$=".disqus.com/embed.js"]');
        let newScript;
        if ( disqusScript !== null ) {
            disqusScript.remove();
            newScript = document.createElement('script');
            if ( disqusScript.hasAttributes() ) {
                const attrs = disqusScript.attributes;
                for ( let i = 0; i < attrs.length; i++ ) {
                    const attr = attrs[i];
                    newScript.setAttribute(attr.name, attr.value);
                }
            }
        } else if ( typeof self.disqus_shortname === 'string' ) {
            newScript = document.createElement('script');
            newScript.async = true;
            newScript.src = `//${self.disqus_shortname}.disqus.com/embed.js`;
        }
        if ( newScript === undefined ) { return; }
        const t = Date.now().toString();
        newScript.src += '?_=1457540' + t.slice(-6);
        document.body.appendChild(newScript);
        ev.preventDefault();
        ev.stopPropagation();
    };
    b.addEventListener('click', loadDisqus, { once: true });
})();

/// disqus_forums_embed.js
(function() {
    'use strict';
    const ee = document.getElementsByTagName('script');
    let i = ee.length, src;
    while ( i-- ) {
        src = ee[i].src || '';
        if ( src === '' ) {
            continue;
        }
        if ( src.lastIndexOf('disqus.com/embed.js') === (src.length - 19) ) {
            return;
        }
    }
    const e = document.createElement('script');
    e.async = true;
    e.src = '//' + window.disqus_shortname + '.disqus.com/embed.js';
    document.body.appendChild(e);
})();

disqus ctl filter list.txt

! Title: Disqus click-to-load
! Expires: 30 days
! Description: load Disqus comments on demand only, 
! so that no connection to `disqus.com` occurs by default when you
! land on a site which uses Disqus comments widget.

! These filters will cause a button labeled:
! "Disqus blocked by uBlock Origin: click to unblock" to be embedded
! where Disqus comments would normally be loaded. Click the button
! to force the comments to be loaded.

||disqus.com/forums/*/embed.js$script,redirect=disqus_forums_embed.js
||disqus.com/embed.js$script,redirect=disqus_embed.js
||disqus.com/count.js$script
@@||disqus.com/embed.js?_=1457540*$script