清除cookie

function clearCookie(){

if(document.cookie.length < 2048){

return;

}

//cookie大于2kb,清除cookie

var cookies =document.cookie.replace(/\s*/g,'').split(';');

var cookieNameArr=$.map(cookies,function(e){

return e.split('=')[0];

})

$.each(cookieNameArr,function(i,name){

var cookiePre = name + "=;expires="+new Date(new Date()-1* 24 * 60 * 60 * 1000).toUTCString()+";path=/;";

document.cookie = cookiePre;//IE下支持

document.cookie = cookiePre + "domain=.lenovo.com.cn;";

document.cookie = cookiePre +"domain=robot.lenovo.com.cn;";

if($.browser.mozilla){

document.cookie = cookiePre.replace("path=/;",'path=/lenovo/;');

document.cookie = cookiePre.replace("path=/;",'path=/robot;') +"domain=robot.lenovo.com.cn;";

}

});

}