解决js存储中文cookie乱码问题

function setCookie(name, value, hours){
  var exp = new Date();    //new Date("December 31, 9998");
exp.setTime(exp.getTime() + hours*60*60*1000);
document.cookie = name + "="+ encodeURIComponent(value) + ";expires=" + exp.toGMTString();
}
function getCookie(name){ //读取时，忽略键名大小写
var reg = new RegExp(["(?:^| )", name, "=([^;]*)"].join(""),"i"),
arr = document.cookie.match(reg);
return arr ? decodeURIComponent(arr[1]) : null;
}