JS学习笔记 - cookie设置、读取、删除

 

 

    <script>

    // 设置cookie
    function setCookie(name, value, iDay)
    {
        var oDate = new Date();
        oDate.setDate(oDate.getDate() + iDay);

        document.cookie = name + '=' +value+ ';expires=' + oDate;
    };

    setCookie('userName', 'aaaccc', 14);
    setCookie('passWord', 'ddddddd', 7);


    // 读取cookie
    function getCookie(name)
    {
        var arr = document.cookie.split(';');

        for(var i=0; i<arr.length; i++)
        {
            var arr2 = arr[i].split('=');

            if(arr2[0] == name)
            {
                return arr2[1]
            };
        };

        return '';
    };

    // 删除cookie
    function removeCookie(name)
    {
        setCookie(name, 1, -1);
    };

    removeCookie('userName');
    removeCookie('passWord');
    alert(document.cookie);
    
    </script>