javascript学习(4)cookie的使用

具体用法:

<script type="text/javascript">
        function writecookie() {
        var today=new Date();
        today.setDate(today.getDate() + 1);
        //document.cookie = 'name=张三的歌;expires='+today.toGMTString();
        document.cookie = 'username=张三的歌;expires=' + today.toGMTString();
        //document.cookie = 'name=张三的歌;expires=' + today.toLocaleString();//此类型的过期时间不支持
    }
    function getcookie() {
    //读cookie
        var cookie = document.cookie;
        alert(cookie);
        var array = cookie.split(';');
        for (var item in array) {
            var array1 = array[item].split('=');
            if (array1[item] == 'username') {
                alert(array1[1]);
            }
        }
        //通过截取字符串的方式来获取cookie的值
//        var index = cookie.indexOf('=');
//        alert(cookie.substr(index + 1));
    }
    </script>

 

 

<input id="Button1" type="button" value="写cookie" onclick="writecookie();" />
    <br />
    <input id="Button2" type="button" value="读cookie" onclick="getcookie();" />