js 获取和设置cookie

function setCookie(name, value)

{

    var Days = 30; //时间为30天

    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, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");

    if (arr = document.cookie.match(reg))

    {

        return unescape(arr[2]);

    }

    else return "";

}