= (reg))

return (arr[2]);

else

return null;

}

//创建并发送请求

function createSender(url){

var img = new Image();

img.onload = img.onerror = function(){

img = null;

};

img.src = url;

};

(function(){

/*

*防劫持逻辑所需参数在此处设置参数即可

*cookieName:用于记录连续被劫持的次数，为防止死循环，cookie值为3以上则不进行url重置

*cookieDomain:cookie所在的域

*reportUrl:非连续性劫持时上报的接口地址【如无需上报，可不填】

*reportUrl2：连续性劫持时上报的接口地址【如无需上报，可不填】

*/

var cookieName = 'hiijack';

var cookieDomain = '.';

var reportUrl = '///ajax/safe/hiijackReport?times=1&_csrfToken='+ getCookie('_csrfToken')||'';

var reportUrl2 = '///ajax/safe/hiijackReport?times=3&_csrfToken='+ getCookie('_csrfToken')||'';

//判断是否被iframe

if (top.location !== ) {

//用于记录被劫持的次数

var countHijack;

//如果未设置cookie，则需要set一下cookie，否则获取此cookie的值

if(!getCookie(cookieName)){

setCookie(cookieName,0 ,cookieDomain, '', 30*24*60*60*1000);

countHijack = 0;

}else{

countHijack = parseInt(getCookie(cookieName));

}

//如果连续被劫持的次数大于等于3次，则发请求上报此情况,否则上报非连续性的情况,同时累加被劫持次数、重置当前url

if(countHijack >= 3){

reportUrl2 && reportUrl2!='' && createSender(reportUrl2);

}else{

reportUrl && reportUrl!=''&& createSender(reportUrl);

countHijack ++;

setCookie(cookieName, countHijack ,cookieDomain, '', 30*24*60*60*1000);

top.location = ;

}

}

//每次成功进入页面则计数清0

setCookie(cookieName, 0 ,cookieDomain, '', 30*24*60*60*1000);

})();

//end 防劫持