这段JS代码什么意思

解决方案 »

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先排版。
function statHandler(f, c) {
    var g = (c.target) ? c.target : window.event.srcElement;
    var d = window.encodeURIComponent ? encodeURIComponent : escape;
    var b = null;
    if (g.tagName.toLowerCase() == "label") {
        if (document.images) {
            oName = g.value;
            new Image().src = "http://stat-w.maxthon.com/np?t=click&m=" + f + "&n=" + d(g.childNodes[1].childNodes[0].nodeValue) + "&v=" + oName + "&rand=" + Math.random().toString().substr(2, 4)
        }
    }
    if (g.tagName.toLowerCase() == "input") {
        if (g.type.toLowerCase() == "radio") {
            if (document.images) {
                oName = g.value;
                new Image().src = "http://stat-w.maxthon.com/np?t=click&m=" + f + "&n=" + d(g.nextSibling.childNodes[0].nodeValue) + "&v=" + oName + "&rand=" + Math.random().toString().substr(2, 4)
            }
        }
    }
    if (g.tagName.toLowerCase() == "a" || g.tagName.toLowerCase() == "img" || g.tagName.toLowerCase() == "font" || g.tagName.toLowerCase() == "b" || g.tagName.toLowerCase() == "span") {
        b = qhstat_geta(g);
        if (b && b.tagName != null && b.tagName.toLowerCase() == "a") {
            if (document.images) {
                new Image().src = "http://stat-w.maxthon.com/np?t=click&m=" + f + "&n=" + d(b.childNodes[0].nodeValue) + "&v=" + d(b.href).replace(/\+/g, "%2B") + "&rand=" + Math.random().toString().substr(2, 4)
            }
        }
    }
}
function qhstat_geta(a) {
    while (a && a.tagName != null && a.tagName.toLowerCase() != "a") {
        a = (a.parentNode) ? a.parentNode : a.parentElement
    }
    return a
}
$("xxyl").onmousedown = function (d) {
    var c = d ? d : window.event;
    statHandler(this.id, c)
};
$("yszx").onmousedown = function (d) {
    var c = d ? d : window.event;
    statHandler(this.id, c)
};
$("dnwl").onmousedown = function (d) {
    var c = d ? d : window.event;
    statHandler(this.id, c)
};
$("qita").onmousedown = function (d) {
    var c = d ? d : window.event;
    statHandler(this.id, c)
};
$("websites").onmousedown = function (d) {
    var c = d ? d : window.event;
    statHandler(this.id, c)
};
$("guangg").onmousedown = function (d) {
    var c = d ? d : window.event;
    statHandler(this.id, c)
};
$("header-search-menu").onmousedown = function (d) {
    var c = d ? d : window.event;
    statHandler(this.id, c)
};
$("header-search-engine").onmousedown = function (d) {
    var c = d ? d : window.event;
    statHandler(this.id, c)
};
$("skin-box").onmousedown = function (d) {
    var c = d ? d : window.event;
    statHandler(this.id, c)
};
var catarr = ["category-xiaoshuo", "category-shipin", "category-youxi", "category-yinyue", "category-gupiao", "category-caipiao", "category-tupian", "category-xinwen", "category-junshi", "category-qiche", "category-ruanjian", "category-gouwu", "category-nvxing", "category-weibo", "category-shequ", "category-yinhang", "category-shouji", "category-luntan", "category-zhaopin", "category-jiankang", "category-shenghuo", "category-tiyu", "category-youxiang", "category-kuzhan"];
for (var i = 0, len = catarr.length; i < len; i++) {
    try {
        $(catarr[i]).onmousedown = function (d) {
            var c = d ? d : window.event;
            statHandler(this.id, c)
        }
    } catch (e) {}
};
http://jsbeautifier.org/这个是一个统计用户行为的代码。new Image().src = "提交用户操作的参数"
明显$("websites").onmousedown = 就是绑定事件。