setCookie、getCookie和delCookie

function setCookie(name,value,day){ var exp=new Date(); exp.setTime(exp.getTime()+day2460601000); document.cookie=name+"="+escape(value)+";expires="+exp.toGMTString(); } function getCookie(name){ var arr=document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)")); if(arr!=null){ return unescape(arr[2]); } return null; } 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(); } }