js操作Cookie

添加cookie
<script language="JavaScript" type="text/javascript">
 
function addCookie(name,value,expiresHours){
var cookieString=name+"="+escape(value);
//判断是否设置过期时间,0代表关闭浏览器时失效
if(expiresHours>0){
var date=new Date();
date.setTime(date.getTime+expiresHours*3600*1000);
cookieString=cookieString+"; expires="+date.toGMTString();
}
document.cookie=cookieString;
}
 
</script>

根据指定名称的cookie修改cookie的值

<script language="JavaScript" type="text/javascript">
   
function editCookie(name,value,expiresHours){
var cookieString=name+"="+escape(value);
//判断是否设置过期时间,0代表关闭浏览器时失效
if(expiresHours>0){
  var date=new Date();
  date.setTime(date.getTime+expiresHours*3600*1000); //单位是多少小时后失效
  cookieString=cookieString+"; expires="+date.toGMTString();
}
  document.cookie=cookieString;
}
 
</script>

获取指定名称的cookie值

<script language="JavaScript" type="text/javascript">
 
function getCookie(name){
  var strCookie=document.cookie;
  var arrCookie=strCookie.split("; ");
  for(var i=0;i<arrCookie.length;i++){
    var arr=arrCookie[i].split("=");
    if(arr[0]==name){
      return unescape(arr[1]);
    }else{
         return "";
     }
  }
 
}
 
</script>

删除指定名称的cookie

<script language="JavaScript" type="text/javascript">
 
function deleteCookie(name){
var date=new Date();
date.setTime(date.getTime()-10000); //设定一个过去的时间即可
document.cookie=name+"=v; expires="+date.toGMTString();
}
 
</script>