百度自动推送代码备份

(function(){
        var canonicalURL, curProtocol;
        //Get the  tag
        var x=document.getElementsByTagName("link");
        //Find the last canonical URL
        if(x.length > 0){
            for (i=0;i<x.length;i++){
                if(x[i].rel.toLowerCase() == 'canonical' && x[i].href){
                    canonicalURL=x[i].href;
                }
            }
        }
        //Get protocol
        if (!canonicalURL){
            curProtocol = window.location.protocol.split(':')[0];
        }
        else{
            curProtocol = canonicalURL.split(':')[0];
        }
        //Get current URL if the canonical URL does not exist
        if (!canonicalURL) canonicalURL = window.location.href;
        //Assign script content. Replace current URL with the canonical URL
        !function(){var e=/([http|https]:\/\/[a-zA-Z0-9\_\.]+\.baidu\.com)/gi,r=canonicalURL,t=document.referrer;if(!e.test(r)){var n=(String(curProtocol).toLowerCase() === 'https')?"https://sp0.baidu.com/9_Q4simg2RQJ8t7jm9iCKT-xh_/s.gif":"//api.share.baidu.com/s.gif";t?(n+="?r="+encodeURIComponent(document.referrer),r&&(n+="&l="+r)):r&&(n+="?l="+r);var i=new Image;i.src=n}}(window);
    })();