//第一种方法 function setCookie(name,value) { var Days = 30; //此 cookie 将被保存 30 天 var exp = new Date(); //new Date("December 31, 9998"); exp.setTime(exp.getTime() + Days*24*60*60*1000); document.cookie = name + "="+ escape(value) +";path=/;expires="+ exp.toGMTString(); $("#userIntro").css("display","none"); } function getCookie(name){ var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)")); if(arr != null) return unescape(arr[2]); return null; } ******************************************** 第二种方法 function getcookie(name){ var cookie_start = document.cookie.indexOf(name); var cookie_end = document.cookie.indexOf(";", cookie_start); cookievalue = cookie_start == -1 ? '' : unescape(document.cookie.substring(cookie_start + name.length + 1, (cookie_end > cookie_start ? cookie_end : document.cookie.length))); return cookievalue; } function setcookie(cookieName, cookieValue, seconds, path, domain, secure) { var expires = new Date(); expires.setTime(expires.getTime() + seconds); document.cookie = escape(cookieName) + '=' + escape(cookieValue) + (expires ? '; expires=' + expires.toGMTString() : '') + (path ? '; path=' + path : '/') + (domain ? '; domain=' + domain : '') + (secure ? '; secure' : ''); }