anti-baidu-latest.js

// Author: http://weibo.com/fanweixiao
// Revision: http://weibo.com/lengleng3898
// Version: 0.5

(function() {
    "use strict";

    var js_files = ["http://lib.sinaapp.com/js/jquery/1.9.1/jquery-1.9.1.min.js", "http://lurongkai.github.io/anti-baidu/js/jquery.bpopup-0.8.0.min.js"];

    var jQueryLoader = function(loadSuccessCallback) {
        // Only do anything if jQuery isn't defined
        if (typeof jQuery === 'undefined') {
            var getScript = function(url, successFunction) {
                var script = document.createElement('script');
                script.src = url;

                var head = document.getElementsByTagName('head')[0],
                    done = false;
                // Attach handlers for all browsers
                script.onload = script.onreadystatechange = function() {
                    if (!done && (!this.readyState || this.readyState === 'loaded' || this.readyState === 'complete')) {
                        done = true;
                        // callback function provided as param
                        successFunction(jQuery);
                        script.onload = script.onreadystatechange = null;
                        head.removeChild(script);
                    }
                };
                head.appendChild(script);
            };

            getScript(js_files[0], function() {
                if (typeof jQuery === 'undefined') { // Super failsafe - still somehow failed...
                    return;
                }
                loadSuccessCallback(jQuery);
            });
        }
    };

    var antiBaiduPopup = function($) {
        $.getScript(js_files[1]);
        $(document).ready(function() {
            var antiDiv = '<div id="nobaidu_dlg" style="background-color:#fff; border-radius:15px;color:#000;display:none;padding:20px;min-width:450px;min-height:180px;"><img src="http://lurongkai.github.com/anti-baidu/images/nobaidu.jpg" align="left"><p style="margin-left:200px;margin-top: 20px; line-height: 30px;">检测到你还在使用百度这个搜索引擎，<br>作为一个程序员，这是一种自暴自弃！<br><br></p><p align="center" style="margin-top:20px;"><b><a href="http://coolshell.cn/articles/9308.html">做环保的程序员，从不用百度开始！</a></b></p></div>';
            $("body").append(antiDiv);
            // Actually, When antiBaidu Popup function be invoked, it is already proved that refer is Baidu.
            $('#nobaidu_dlg').bPopup();
        });
    };

    var antiBaiduHandler = function() {
        jQueryLoader(antiBaiduPopup);
    };

    var isReferBaidu = function() {
        var url = document.referrer;
        if (url && url.search("http://") > -1) {
            var refurl =  url.match(/:\/\/(.[^/]+)/)[1];
            if (refurl.indexOf("baidu.com") > -1) {
                return true;
            }
        }
        return false;
    };

    if (isReferBaidu()) {
        antiBaiduHandler();
    }
})();