Javascript Cookies未定义

Question

我想在Cookie中保存数字的值

var num = 1;

我使用这两个函数来设置cookie并阅读它

function createCookie(name,value,days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var expires = "; expires="+date.toGMTString();
    }
    else var expires = "";
    document.cookie = name+"="+value+expires+"; path=/";
};

和

function readCookie(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)
        var x = c.substring(nameEQ.length,c.length);
        console.info("Value of num = " +x);
    }
};

我像这样调用函数

cname = "cookie1";
createCookie(cname,num,0);
readCookie(cname);

在控制台中，我得到cookie未定义或类似“5_655666 = xKV1REGZllELnKC1ZJQ7BAlbbFYAAAAA4WCdPor9VSiD08vABGt6oA ==” “cookie1 gers = false” “cookie1 nds = false” 很多时候我无法弄清楚问题是什么。