javascript操作cookie 的通用函数

 

function setCookie(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=/";
}

 

 

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 deleteCookie(name) {
    setCookie(name,"",-1);
}

 

使用方法
// 创建/写一个cookie,并将它存储为1天
setCookie('myCookie', 'myValue', 1);

 

// 获得我的Cookie值
getCookie('myCookie');

 

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