<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript" src="jquery/jquery-1.4.4.js"></script>
<script type="text/javascript">
function GetWeather(a) {
var date = new Date();
var cDate = date.getFullYear() + "-" + (date.getMonth()) + "-"
+ date.getDate();
$("#wPlace").text(a.value);
$.getScript("http://php.weather.sina.com.cn/js.php?" + $.param({
city : a.value,
day : cDate,
password : "DJOYnieT8234jlsK"
}), function(json) {//数据返回
$("#weather").text(status1 + " " + direction1);
$("#wd").text(temperature1 + "°~" + temperature2 + "°");
/*
需要传入city参数，就是要获取天气的城市名，直接写中文名称
status1:天气状况（多云，晴，小雨，雪等等）
temperature1：温度
*/
});
}
</script>
</head>
<body onload="">
<div>
<select id="selectInput" onchange="GetWeather(this);" name="TEMP"
style="width: 100px;">
<option value="成都">成都</option>
<option value="北京">北京</option>
<option value="上海">上海</option>
<option value="香港">香港</option>
<option value="长沙">长沙</option>
</select>
</div>
<div id="wPlace"></div>
<div id="weather"></div>
<div id="wd"></div>
</body>
</html>原文：http://blog.csdn.net/hackcoder/article/details/38701817