js设置cookie

function setCookie(c_name,value,expiredays)//设置cookie{    var exdate=new Date();//注意加密    var aa=exdate.getTime()+expiredays*3600*24*1000;    document.cookie=c_name+ "=" + value+            ((expiredays==null) ? "" : ";expires="+aa)}setCookie('name', 'zhansgan', 1);function getCookie(name) {//获取cookie    var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");    if (arr = document.cookie.match(reg)) {        console.log(arr[2]);        return arr[2];//注意加密    }    else {        return null;    }};getCookie('name');
//删除cookie

function delCookie(name){    var exp = new Date();    exp.setTime(exp.getTime() - 1);    var cval=getCookie(name);    if(cval!=null)        document.cookie= name + "="+cval+";expires="+exp.toGMTString();}