主代码:
<script>
function setCookies(cookieName,cookieValue,expirehours){
var today = new Date();
var expire = new Date();
expire.setTime(today.getTime() + 3600000 * 365 * 24);
document.cookie = cookieName+'='+escape(cookieValue)+ ';expires='+expire.toGMTString() + "; path=/;";
}
function ReadCookies(cookieName){
var theCookie=''+document.cookie;
var ind=theCookie.indexOf(cookieName);
if (ind==-1 || cookieName=='') return '';
var ind1=theCookie.indexOf(';',ind);
if (ind1==-1) ind1 = theCookie.length;
return unescape(theCookie.substring(ind+cookieName.length+1,ind1)).replace(";","");
}
function closeBox()
{
var elm = document.getElementById('wordreplacerBox');
if (elm) { elm.style.display = 'none'; }
setCookies("001","close");
}
if(ReadCookies("001") != "close"){
document.writeln("<div id="wordreplacerBox"><a title=点击关闭 href='javascript:closeBox()'>关闭此项</a></div>");
}
</script>
上面的代码点击“关闭此项”后，读入COOKIE，刷新页面后“关闭此项”不可见。现在我想增加一个链接，点击它即删除写入的COOKIE，还原“关闭此项”(功能要求和原先一样)。请高手修改一下！另附加了一段含有删除COOKIE的代码，看可否参考，谢谢！不明请留言，也可邮件联系：wowunai#yahoo.com.cn(#改为@)
附加:
<script language="JavaScript" type="text/javascript">
function addCookie(objName,objValue,objHours){//添加cookie
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);
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");
alert(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>
我推荐发布本任务得多少钱？ 
任务赏金的8% .
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