/**
*设置cookie
*/
function setCookie(cookieName, cookieValue) {
var date = newDate();
var expiresDays = 1;
date.setTime(date.getTime() + expiresDays * 24 * 3600 * 1000);// cookie失效时间
document.cookie = cookieName +'='+ escape(cookieValue) +";expires="+ date.toGMTString()+";path=/";//+";path=/"
}
/**
*删除cookie
*/
function DelCookie(name) {
var exp = newDate();
exp.setTime(exp.getTime() + (-1 * 24 * 60 * 60 * 1000));
var cval = getCookieValueByName(name);
document.cookie = name +"="+ cval +"; expires="+ exp.toGMTString()+";path=/";
}
/**
*读取cookie值
*/
function getCookieValueByName(cookieName) {
var cookieValue = null;
var begin = document.cookie.indexOf(cookieName);
if(begin != -1) {
begin += cookieName.length + 1;
var end = document.cookie.indexOf(";", begin);
if(end == -1) {
end = document.cookie.length;
}
cookieValue = unescape(document.cookie.substring(begin, end));// 获取cookieName的值
}
return cookieValue;
}
