设置Cookie并使用JavaScript获取Cookie

我发现以下代码比其他任何代码都简单得多：

function setcookie(name,value,days) {    var expires = "";    if (days) {        var date = new Date();        date.setTime(date.getTime() + (days*24*60*60*1000));        expires = "; expires=" + date.toUTCString();    }    document.cookie = name + "=" + (value || "")  + expires + "; path=/";}function getcookie(name) {    var nameEQ = name + "=";    var ca = document.cookie.split(';');    for(var i=0;i < ca.length;i++) {        var c = ca[i];        while (c.charAt(0)==' ') c = c.substring(1,c.length);        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);    }    return null;}function erasecookie(name) {       document.cookie = name+'=; Max-Age=-99999999;';  }

现在，调用函数

setcookie('ppkcookie','testcookie',7);var x = getcookie('ppkcookie');if (x) {    [do something with x]}