js 操作cookie 添加 删除 获取

function setCookie(name,value) { var never = new Date(); //设置Cookie的有效期 never.setTime(never.getTime() + 1*60*60*1000); var expString = "expires=" + never.toGMTString() +";"; document.cookie = name+"=" + escape(value) +"; " + expString; } function getCookie(name) { var result = null; var myCookie = " " + document.cookie + ";"; var searchName = " " + name + "="; var startOfCookie = myCookie.indexOf(searchName); var endOfCookie; if (startOfCookie != -1) { startOfCookie += searchName.length; endOfCookie = myCookie.indexOf(";", startOfCookie); result = unescape(myCookie.substring(startOfCookie, endOfCookie)); } return result; }function delCookie(name){//为了删除指定名称的cookie，可以将其过期时间设定为一个过去的时间 var date = new Date(); date.setTime(date.getTime() - 10000); document.cookie = name + "=a; expires=" + date.toGMTString();} 相关资源：javascript cookie的基本操作（添加和删除）