cookie操作简单实现
var Cookie = { get:function(key){ var reg = new RegExp('(?:^| )' + key + '=([^;]+)(?=;|$)','gi'); return (result = document.cookie.match(reg)) == null ? null : decodeURIComponent(result[1]); }, set:function(key,value,expireHours,path,domain,secure){ var path = path || '/', domain = domain || location.host, cookie = [key + '=' + encodeURIComponent(value),'path=' + path,'domain='+domain]; if(expire){ cookie.push('expires=' + this.hoursToExpire(expireHours)) } if(secure){ cookie.push(secure) } document.cookie = cookie.join(''); return document.cookie; }, del:function(key){ if(this.get(key)){var expire = new Date(); expire.setTime(now.getTime() - 10000); this.set(key,'',expire,path,domain); } }, hoursToExpire:function(hours){ if(parseInt(hours) == NaN){ return ''; } var now = new Date(); now.setTime(now.getTime() + parseInt(hours)*60*60*1000); return now.toGMTString(); } }