javascript创建cookie、读取cookie

document.cookie = 'name=guoqian';
document.cookie = 'age=24';
document.cookie = 'address=hunan';
document.cookie = 'user='+encodeURIComponent('郭钱;'); 

function SetCookie(name, value, expires, path, domain, secure) {
 var today = new Date();
 today.setTime(today.getTime());
 if(expires) { expires *= 86400000; }
 var expires_date = new Date(today.getTime() + (expires));
 document.cookie = name + "=" + escape(value)
  + (expires ? ";expires=" + expires_date.toGMTString() : "")
  + (path ? ";path=" + path : "")
  + (domain ? ";domain=" + domain : "")
  + (secure ? ";secure" : "");
}

function getCookieByString(cookieName){
 var start = document.cookie.indexOf(cookieName+'=');
 if (start == -1) return false;
 start = start+cookieName.length+1;
 var end = document.cookie.indexOf(';', start);
 if (end == -1) end=document.cookie.length;
 return document.cookie.substring(start, end);
}

function getCookieByArray(name){
 var cookies = document.cookie.split(';');
 var c;
 for(var i=0; i<cookies.length ; i++){
  c = cookies[i].split('=');
  if (c[0].replace(' ', '') == name) {
   return c[1];
  }
 }
}
var r = decodeURIComponent(getCookieByArray('user'));
alert(r);