javascript操作cookie

 //set cookie

function setcookie(name,value){
var Days = 30;
var exp = new Date();
exp.setTime(exp.getTime() + Days*24*60*60*1000);
document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}

function getcookie(name){
var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
if(arr != null){
return unescape(arr[2]);
}else{
return "";
}
}

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();
}

//delcookie("GD-cms");
if (document.cookie != "") {
setcookie("GD-cms", "gae-django-cms");
}
alert(getcookie("GD-cms"));