cookie操作例子

最新推荐文章于 2025-08-12 14:37:12 发布

penghuaiyi2008

最新推荐文章于 2025-08-12 14:37:12 发布

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分类专栏： JavaScript总结文章标签： javascript ViewUI

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<html>
<head>
<title></title>
<script type="text/javascript">

//设置cookie
function setCookie(name,value)
{
    var Days = 30; //此 cookie 将被保存 30 天
    var exp  = new Date();  //new Date("December 31, 9998");
    exp.setTime(exp.getTime() + Days*24*60*60*1000);
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}


//取cookies函数 
function getCookie(name)       
{
    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
    if(arr != null) return unescape(arr[2]);

	return null;

}

//删除cookie
function delCookie(name)
{
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    var cval=getCookie(name);
    if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();
}


function addUserName()
{
  var nv=document.all.username.value;
  setCookie("username",nv);
}

function init()
{
   document.all.username.value=getCookie("username")==null?"":getCookie("username");
}


</script>
</head>
<body onload="init()">
  <input type="text" name="username" onblur="addUserName()"> <input type="button" value="clear cookie" onClick="delCookie('username')">
</body>
</html>