<script type="text/javascript"> /** 功 能:设置COOKIE 参 数: name cookie名 value cookie值 expire cookie过期时间,单位天 */ function setCookie(name,value,expire) { var expire = expire ? expire : 1; //默认1天 var exp = new Date(); //new Date("December 31, 9998"); exp.setTime(exp.getTime() + expire*24*60*60*1000); document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString(); } /** 功 能:读取COOKIE 参 数: name cookie名 */ function getCookie(name) { var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)")); if(arr != null) { return unescape(arr[2]); } return null; } /** 功 能:删除COOKIE 参 数: name cookie名 */ function delCookie(name) { var exp = new Date(); exp.setTime(exp.getTime() - 1); var cval=getCookie(name); if(cval!=null) { document.cookie= name + "="+cval+"; expires="+exp.toGMTString(); } } setCookie('xiaoyu', '3'); alert(getCookie('xiaoyu')); </script>