谁知道之一段JS 代码是做什么用了？

Question

/* stat.min.js */
(function(){window.SiteStat={StatUrl:"http://hao.uc.cn/stat.php",HttpUtil:{encode:function(a){return encodeURIComponent(a).replace(/\+/g,"%20")},pingByImage:function(d,g,c){var f=new Image,e=typeof g,h;if(e==="string"){h=IComponent(v)}else{if(e==="object"){var b=[];for(var a in g){b.push(a+"="+this.encode(g[a]))}h=b.join("&")}}f.src=d+(d.indexOf("?")>-1?"&":"?")+h;f.onload=f.onerror=function(){if(c&&typeof(c)==="function"){c()}}},pingByXHR:function(a,b,d){var h=new XMLHttpRequest(),i=typeof b,c,e;if(i==="string"){c=this.encode(b)}else{if(i==="object"){var f=[];for(var g in b){f.push(g+"="+this.encode(b[g]))}c=f.join("&")}}e=a+(a.indexOf("?")>-1?"&":"?")+c;h.onreadystatechange=function(){if(h.readyState===2||h.readyState===4){if(d){d()}}};h.onerror=function(){if(d){d()}};h.open("get",e);h.send()},ping:function(b,c,a){this.pingByXHR(b,c,a)}},parseLiUrl:function(b){if(!b){return null}var a=b.indexOf("javascript:location.href=");if(a==-1){return null}var c=b.substring(a+"javascript:location.href=".length);if(!c||c.length==0){return null}return c.substring(1,c.length-1)},action:function(){document.body.addEventListener("click",function(d){if(d.target.tagName.toLowerCase()==="a"){d.preventDefault();SiteStat.HttpUtil.ping(SiteStat.StatUrl,{ourl:d.target.href,uc_param_str:"prdnfrpfbivelabtbmntnieisipvsscp"},function(){window.location.href=d.target.href})}var b=null;if(d.target.tagName.toLowerCase()==="button"){b=d.target.getAttribute("ourl")}if(d.target.tagName.toLowerCase()==="li"){var a=d.target.getAttribute("onclick");b=SiteStat.parseLiUrl(a)}if(b){d.preventDefault();var c=d.target.onclick;d.target.onclick=null;SiteStat.HttpUtil.ping(SiteStat.StatUrl,{ourl:b,uc_param_str:"prdnfrpfbivelabtbmntnieisipvsscp"},function(){if(c){c();d.target.onclick=c}if(d.target.form){d.target.form.submit()}})}},true)}}})();

Answer 1

看这样给打成包了啊，一个底层原生的ajax，从某某地址获取信息的一个包？

Answer 2

(function() {
    window.SiteStat = {
        StatUrl: "http://hao.uc.cn/stat.php",
        HttpUtil: {
            encode: function(a) {
                return encodeURIComponent(a).replace(/\+/g, "%20")
            },
            pingByImage: function(d, g, c) {
                var f = new Image,
                e = typeof g,
                h;
                if (e === "string") {
                    h = IComponent(v)
                } else {
                    if (e === "object") {
                        var b = [];
                        for (var a in g) {
                            b.push(a + "=" + this.encode(g[a]))
                        }
                        h = b.join("&")
                    }
                }
                f.src = d + (d.indexOf("?") > -1 ? "&": "?") + h;
                f.onload = f.onerror = function() {
                    if (c && typeof(c) === "function") {
                        c()
                    }
                }
            },
            pingByXHR: function(a, b, d) {
                var h = new XMLHttpRequest(),
                i = typeof b,
                c,
                e;
                if (i === "string") {
                    c = this.encode(b)
                } else {
                    if (i === "object") {
                        var f = [];
                        for (var g in b) {
                            f.push(g + "=" + this.encode(b[g]))
                        }
                        c = f.join("&")
                    }
                }
                e = a + (a.indexOf("?") > -1 ? "&": "?") + c;
                h.onreadystatechange = function() {
                    if (h.readyState === 2 || h.readyState === 4) {
                        if (d) {
                            d()
                        }
                    }
                };
                h.onerror = function() {
                    if (d) {
                        d()
                    }
                };
                h.open("get", e);
                h.send()
            },
            ping: function(b, c, a) {
                this.pingByXHR(b, c, a)
            }
        },
        parseLiUrl: function(b) {
            if (!b) {
                return null
            }
            var a = b.indexOf("javascript:location.href=");
            if (a == -1) {
                return null
            }
            var c = b.substring(a + "javascript:location.href=".length);
            if (!c || c.length == 0) {
                return null
            }
            return c.substring(1, c.length - 1)
        },
        action: function() {
            document.body.addEventListener("click",
            function(d) {
                if (d.target.tagName.toLowerCase() === "a") {
                    d.preventDefault();
                    SiteStat.HttpUtil.ping(SiteStat.StatUrl, {
                        ourl: d.target.href,
                        uc_param_str: "prdnfrpfbivelabtbmntnieisipvsscp"
                    },
                    function() {
                        window.location.href = d.target.href
                    })
                }
                var b = null;
                if (d.target.tagName.toLowerCase() === "button") {
                    b = d.target.getAttribute("ourl")
                }
                if (d.target.tagName.toLowerCase() === "li") {
                    var a = d.target.getAttribute("onclick");
                    b = SiteStat.parseLiUrl(a)
                }
                if (b) {
                    d.preventDefault();
                    var c = d.target.onclick;
                    d.target.onclick = null;
                    SiteStat.HttpUtil.ping(SiteStat.StatUrl, {
                        ourl: b,
                        uc_param_str: "prdnfrpfbivelabtbmntnieisipvsscp"
                    },
                    function() {
                        if (c) {
                            c();
                            d.target.onclick = c
                        }
                        if (d.target.form) {
                            d.target.form.submit()
                        }
                    })
                }
            },
            true)
        }
    }
})();

Answer 3

是做什么用呢？window.SiteStat  这个是定义什么的？