SharedCount JSONP/CORS jQuery plugin - Cache friendly

jQuery-sharedcount.js

jQuery.sharedCount = function(url, fn) {
    url = encodeURIComponent(url || location.href);
    var arg = {
        url: "//" + (location.protocol == "https:" ? "sharedcount.appspot" : "api.sharedcount") + ".com/?url=" + url,
        cache: true,
        dataType: "json"
    };
    if ('withCredentials' in new XMLHttpRequest) {
        arg.success = fn;
    }
    else {
        var cb = "sc_" + url.replace(/\W/g, '');
        window[cb] = fn;
        arg.jsonpCallback = cb;
        arg.dataType += "p";
    }
    return jQuery.ajax(arg);
};

jQuery-sharedcount.min.js

jQuery.sharedCount=function(b,c){var b=encodeURIComponent(b||location.href),a={url:"//"+("https:"==location.protocol?"sharedcount.appspot":"api.sharedcount")+".com/?url="+b,cache:!0,dataType:"json"};if("withCredentials"in new XMLHttpRequest)a.success=c;else{var d="sc_"+b.replace(/\W/g,"");window[d]=c;a.jsonpCallback=d;a.dataType+="p"}return jQuery.ajax(a)};

sampleusage.js

jQuery(document).ready(function($){
        $.sharedCount(location.href, function(data){
                $("#tweets").text(data.Twitter);
                $("#likes").text(data.Facebook.like_count);
                $("#plusones").text(data.GooglePlusOne);
                $("#sharedcount").fadeIn();
        });
});

Shouldn't line 11 include a slash in the regex? \W?

var cb = "sc_" + url.replace(/\W/g, '');

@nicinabox Yes, thanks! For some reason it got removed in the last edit. I've reverted it.

Hi,
SharedCount is no longer accepting new signups. We're providing an API compatible alternative at https://engagedcount.com/