JavaScript中Cookie操作

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

读取Cookie

function getCookie(name)
{

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

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();
};

自定义Cookie存储时间

function setCookieWithTime(name, value, time)
{
    var strsec = getsec(time);
    var exp = new Date();
    exp.setTime(exp.getTime() + strsec*1);
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
};
function getsec(str)
{
    alert(str);
    var str1=str.substring(1,str.length)*1;
    var str2=str.substring(0,1);
    if (str2=="s")
    {
        return str1*1000;
    }
    else if (str2=="h")
    {
        return str1*60*60*1000;
    }
    else if (str2=="d")
    {
        return str1*24*60*60*1000;
    }
};