Js COOkie 读取
<!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>
