cookie

//创建cookiefunction setCookie(name, value, expireday) {var exp = new Date();exp.setTime(exp.getTime() + expireday*24*60*60*1000); //设置cookie的期限document.cookie = name+"="+escape(value)+"; expires"+"="+exp.toGMTString();//创建cookie}//提取cookie中的值function getCookie(name) {var cookieStr = document.cookie;if(cookieStr.length > 0) {var cookieArr = cookieStr.split(";"); //将cookie信息转换成数组for (var i=0; i<cookieArr.length; i++) {var cookieVal = cookieArr[i].split("="); //将每一组cookie(cookie名和值)也转换成数组if(cookieVal[0] == name) {return unescape(cookieVal[1]); //返回需要提取的cookie值}}}}//测试cookiefunction checkCookie() {var cookieUser = document.getElementById("cookieUser");var userName = getCookie("userName");if(userName) {cookieUser.innerHTML = "您好，"+userName+"！"; } else {    window.location.href='../index.html';    //alert("请设置浏览器允许接受cookie！或联系技术支持！", "错误");}}