js操作cookie

 ???/** ????* 设置cookie ????* @param {string} name ?键名 ????* @param {string} value 键值 ????* @param {integer} days cookie周期 ????*/ ???function setCookie(name,value,days) { ???????if (days) { ???????????var date = new Date(); ???????????date.setTime(date.getTime()+(days*24*60*60*1000)); ???????????var expires = "; expires="+date.toGMTString(); ???????}else{ ???????????var expires = ""; ???????} ???????document.cookie = name+"="+value+expires+"; path=/"; ???} ???// 获取cookie ???function getCookie(name) { ???????var nameEQ = name + "="; ???????var ca = document.cookie.split(‘;‘); ???????for(var i=0;i < ca.length;i++) { ???????????var c = ca[i]; ???????????while (c.charAt(0)==‘ ‘) c = c.substring(1,c.length); ???????????if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length); ???????} ???????return null; ???} ???// 删除cookie ???function deleteCookie(name) { ???????setCookie(name,"",-1); ???}