Detect if ad blockers are present

ad-blocker-detection.js

/**
 * Attempt to load a script from a popular ad network. Ad blockers will intercept the HTTP request.
 *
 * @param {string} url
 * @return {Promise}
 */
function detectAdBlockerAsync(url){
    var def = $.Deferred();
    var script = document.createElement('script');

    script.onload = function(){
        $(script).remove();
        def.resolve();
    }

    script.onerror = function(){
        $(script).remove();
        def.reject();
    };

    script.src = url;
    document.body.appendChild(script);

    return def.promise();
}

detectAdBlockerAsync('http://ads.pubmatic.com/AdServer/js/gshowad.js')
    .then(function(){
        document.body.style.background = '#0c0';
    })
    .fail(function(){
        document.body.style.background = '#c00';
    });