下面是一个js跨域请求的小实现

window._naq = {};//外部调用方法    _naq.push = function(obj){
    //obj = {"k":"v","k":"v"}        var url = nmurl+"?";        jsonobj = eval(obj);                for(var k in jsonobj){            url += k+"="+jsonobj[k]+"&";        }        //url+= "accessLog="+($.cookie("access_log") || 0) +"&userId="+($.cookie("userId") || 0);        ajax(encodeURI(url));    }    function ajax(msg){
    //请求msg：http://www.xxx.com/a.gif?a=1&b=2...        var img = new Image();        if(msg.indexOf("?")>1){            if (msg.lastIndexOf("&") + 1 == msg.length) {                img.src = msg + "datetime=" + new Date().getTime();            }else{                img.src = msg + "&datetime=" + new Date().getTime();            }        }else{            img.src = msg+"?datetime="+new Date().getTime();        }            }        //_naq.push({"url":encodeURIComponent(window.location.href),"accessLog":$.cookie("access_log"),"userId":$.cookie("userId")});//默认一次pv    _naq.push({"pv":"true"});//默认一次pv

html页面按照如下方式进行调用

代码片段...<a href="#" οnclick="_naq.push({"pv":"true"})">记录一次点击</a>