模拟jQuery ajax服务器端与客户端通信的代码

var url = “servlet/ajaxServer?name=” + encodeURI(encodeURI($(“#userName”).val()));
//注意url前不要加”/”，否则无法访问url
//var url = “/servlet/ajaxServer?name=” + encodeURI(encodeURI($(“#userName”).val())); //错误
url = convertURL(url);
$.get(url, null, function(data) {
$(“#result”).html(data);
});
}
// 给url地址增加时间戳，骗过浏览器，不读取缓存
function convertURL(url) {
// 获取时间戳
var timstamp = (new Date()).valueOf();
// 将时间戳信息拼接到url上
if (url.indexOf(“?”) >= 0) {
url = url + “&t=” + timstamp;
} else {
url = url + “?t=” + timstamp;
}
return url;
}