JS 一套COOKIE相关的操作函数

 
//检测浏览器是否支持Cookie
function checkCookie(){
 //判断cookie是否开启
 var cookieEnabled=(navigator.cookieEnabled)? true : false;
 //如果浏览器不是ie4+或ns6+
 if (typeof navigator.cookieEnabled=="undefined" && !cookieEnabled){
  document.cookie="testcookie";
  cookieEnabled=(document.cookie=="testcookie")? true : falsedocument.cookie="";
 }
 
 //如果没有开启
 if(cookieEnabled){
  return true;
 }else{
  return false;
 }
}
//增加Cookie
function addCookie(name,value,expireHours){
 var cookieString=name+"="+escape(value);
 //判断是否设置过期时间
 if(expireHours>0){
  var date=new Date();
  date.setTime(date.getTime+expireHours*3600*1000);
  cookieString=cookieString+"; expire="+date.toGMTString();
 }
 document.cookie=cookieString;
}
//获取Cookie值
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]);
  }
 }
 return false;
}
//删除Cookie
function deleteCookie(name){
 var date=new Date();
 date.setTime(date.getTime()-10000);
 document.cookie=name+"=; expire="+date.toGMTString();
}