Js COOkie 读取

浏览数：14 / 时间：2015年06月09日

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=GB2312" />
    <title>cookie处理函数练习(为我所写，非我所想:改善面向对象)</title>
    <script language="JavaScript" type="text/javascript">
        function addCookie(objName, objValue, objHours) {
            //添加cookievar
            str = objName + "=" + escape(objValue);
            if (objHours > 0) {
                //为0时不设定过期时间，浏览器关闭时cookie自动消失
                var date = new Date();
                var ms = objHours * 3600 * 1000; date.setTime(date.getTime() + ms);
                str += "; expires=" + date.toGMTString();
            }
            document.cookie = str; alert("添加cookie成功");
        }
        function getCookie(objName) {
            //获取指定名称的cookie的值
            var arrStr = document.cookie.split("; ");
            for (var i = 0; i < arrStr.length; i++) {
                var temp = arrStr[i].split("="); if (temp[0] == objName)
                    return unescape(temp[1]);
            }
        }
        function delCookie(name) {
            //为了删除指定名称的cookie，可以将其过期时间设定为一个过去的时间
            var date = new Date(); date.setTime(date.getTime() - 10000); document.cookie = name + "=a; expires=" + date.toGMTString();
        }
        function allCookie() {
            //读取所有保存的cookie字符串
            var str = document.cookie;
            if (str == "")
            { str = "没有保存任何cookie"; } alert(str);
        } function $(m, n) { return document.forms[m].elements[n].value; }
        function add_() {
            var cookie_name = $("myform", "cookie_name");
            var cookie_value = $("myform", "cookie_value");
            var cookie_expireHours = $("myform", "cookie_expiresHours");
            addCookie(cookie_name, cookie_value, cookie_expireHours);
        } function get_() {
            var cookie_name = $("myform", "cookie_name");
            var cookie_value = getCookie(cookie_name); alert(cookie_value);
        } function del_() {
            var cookie_name = $("myform", "cookie_name"); delCookie(cookie_name);
            alert("删除成功");
        }</script>
</head>
<body>
    <form name="myform">
        <div>
            <label for="cookie_name">名称</label><input type="text" name="cookie_name" />
        </div>
        <div>
            <label for="cookie_value">
                值</lable><input type="text" name="cookie_value" />
        </div>
        <div>
            <label for="cookie_expireHours">
                多少个小时过期</lable><input type="text" name="cookie_expiresHours" />
        </div>
        <div>
            <input type="button" value="添加该cookie" onclick=" add_()" />
            <input type="button" value="读取所有cookie" onclick="allCookie()" />
            <input type="button" value="读取该名称cookie" onclick="get_()" />
            <input type="button" value="删除该名称cookie" onclick=" del_()" />
        </div>
    </form>
    <hr />
</body>
</html>