Js_增删改Cookie的值

//获得cookie 的值
function cookie(name) {

var cookieArray = document.cookie.split("; "); //得到分割的cookie名值对

var cookie = new Object();

for (var i = 0; i < cookieArray.length; i++) {

var arr = cookieArray[i].split("="); //将名和值分开

if (arr[0] == name) return unescape(arr[1]); //如果是指定的cookie，则返回它的值

}

return "";

}

function delCookie(name)//删除cookie
{

document.cookie = name + "=;expires=" + (new Date(0)).toGMTString();

}

function getCookie(objName) {//获取指定名称的cookie的值

var arrStr = document.cookie.split("; ");

for (var i = 0; i < arrStr.length; i++) {

var temp = arrStr[i].split("=");

if (temp[0] == objName) return unescape(temp[1]);

}

}

function addCookie(objName, objValue, objHours) { //添加cookie

var str = objName + "=" + escape(objValue);

if (objHours > 0) { //为时不设定过期时间，浏览器关闭时cookie自动消失

var date = new Date();

var ms = objHours * 3600 * 1000;

date.setTime(date.getTime() + ms);

str += "; expires=" + date.toGMTString();

}

document.cookie = str;
}

function SetCookie(name, value)//两个参数，一个是cookie的名子，一个是值
{
var Days = 30; //此 cookie 将被保存 30 天

var exp = new Date(); //new Date("December 31, 9998");

exp.setTime(exp.getTime() + Days * 24 * 60 * 60 * 1000);

document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString();
}