前台cookie的操作

观审美2 2017-03-07

展开全文

<html xmlns="http://www./1999/xhtml">
<head runat="server">
    <title></title>
     <script language="JavaScript" type="text/javascript">

         function addCookie(objName, objValue, objHours) {//添加cookie 
             //escape() 函数可对字符串进行编码，
             var 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);
                 //expires指定了coolie的生命期
                 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 add_() {
             var cookie_name = document.getElementById("cookie_name").value;
             var cookie_value = document.getElementById("cookie_value").value;
             var cookie_expireHours = document.getElementById("cookie_expiresHours").value;  
             addCookie(cookie_name, cookie_value, cookie_expireHours);
         }

         function get_() {
             var cookie_name = document.getElementById("cookie_name").value;
             var cookie_value = getCookie(cookie_name);
             alert(cookie_value);
         }

         function del_() {
             var cookie_name = document.getElementById("cookie_name").value;
             delCookie(cookie_name);
             alert("删除成功");
         } 
    </script>
</head>
<body>
      <form name="myform" runat="server">
    <div>
        <label for="cookie_name">
            名称
        </label>
        <input type="text" id="cookie_name" name="cookie_name" runat="server" />
    </div>
    <div>
        <label for="cookie_value">
            值 </lable>
            <input type="text" id="cookie_value" name="cookie_value" />
    </div>
    <div>
        <label for="cookie_expireHours">
            多少个小时过期 </lable>
            <input type="text" id="cookie_expiresHours" 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_()" />
        <asp:Button ID="Button1" runat="server" Text="后台读取前台cookie" 
            onclick="Button1_Click1" />
    </div>
    </form>
</body>
</html>