用AJAX技术来实现天气预报功能

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责任编辑：rosan　录入时间：2007-1-16 13:35:52 来源：
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tion;

weather.asp
<%@LANGUAGE="JAVASCRIPT" CODEPAGE="65001"%>
<%
Session.CodePage = "65001"
Response.contentType="application/xml"
Response.Expires = 0
var N=Request("n")
var Num=Request("id")
var url="http://xml.weather.yahoo.com/forecastrss?p="+N+"&u=c&id="+Num;
var xmldoc=Server.CreateObject("Microsoft.Xmlhttp");
xmldoc.open(’GET’,url,false);
xmldoc.send(null);
var response = xmldoc.responseXML.documentElement;
var lastNode=response.selectNodes("//rss/channel/lastBuildDate");
var cityNode=response.selectNodes("//rss/channel/yweather:location");
var windNode=response.selectNodes("//rss/channel/yweather:wind");
var atmosphereNode=response.selectNodes("//rss/channel/yweather:atmosphere");
var astronomyNode=response.selectNodes("//rss/channel/yweather:astronomy");
var conditionNode=response.selectNodes("//rss/channel/item/yweather:condition");
var forecastNode=response.selectNodes("//rss/channel/item/yweather:forecast");
var lastV=lastNode(0).firstChild.nodeValue
//编辑属性
function attri(a,b,c){
return a(b).attributes.getNamedItem(c).value
}
var cityV=attri(cityNode,0,"city")
var chillV=attri(windNode,0,"chill")
var directionV=attri(windNode,0,"direction")
var speedV=attri(windNode,0,"speed")
var humidityV=attri(atmosphereNode,0,"humidity")
var visibilityV=attri(atmosphereNode,0,"visibility")
var sunriseV=attri(astronomyNode,0,"sunrise")
var sunsetV=attri(astronomyNode,0,"sunset")
var textV=attri(conditionNode,0,"text")
var codeV=attri(conditionNode,0,"code")
var tempV=attri(conditionNode,0,"temp")
//转换英文为中文
var cityCH=EN2CH(cityV)
function EN2CH(obj){
if(obj=="Wuhan"){return "武汉"}
else if(obj=="Nanchang"){return "南昌"}
else if(obj=="Haikou"){return "海口"}
else if(obj=="Beijing"){return "北京"}
else if(obj=="Shanghai"){return "上海"}
else if(obj=="Guangzhou"){return "广州"}
else if(obj=="Yinchuan"){return "银川"}
else if(obj=="Zhengzhou"){return "郑州"}
else if(obj=="Changsha"){return "长沙"}
else if(obj=="Hanzhong"){return "杭州"}
else if(obj=="Hong Kong"){return "香港"}
else if(obj=="Xin’an"){return "西安"}
else if(obj=="Chengdu"){return "成都"}
else if(obj=="Qingdao"){return "青岛"}
else if(obj=="Guiyang"){return "贵阳"}
else if(obj=="Jinan"){return "济南"}
else if(obj=="Hefei"){return "合肥"}
else if(obj=="Fuzhou"){return "福州"}
else if(obj=="Nanjing"){return "南京"}
else{return obj}
}
//风向函数
var windCH=wind(directionV)
function wind(a){
if(a>337 && a<=360){return "北风"};
else if(a>=0 && a<=22){return "北风"};
else if(a>22 && a<=67){return "东北风"};
else if(a>67 && a<=112){return "东风"};
else if(a>112 && a<=157){return "东南风"};
else if(a>157 && a<=202){return "南风"};
else if(a>202 && a<=247){return "西南风"};
else if(a>247 && a<=292){return "西风"};
else if(a>292 && a<=337){return "西北风"};
}
//能见度函数
visibility=vis(visibilityV)
function vis(a){
return a/100
}
//转换天气为中文
var textCH=tEN2CH(textV)
function tEN2CH(obj){
if(obj=="Clear"){return "晴朗"}
else if(obj=="Sunny"){return "晴天"}
else if(obj=="Partly Cloudy"){return "局部有云"}
else if(obj=="Mostly Clear"){return "晴"}
else if(obj=="Mostly Sunny"){return "小云"}
else if(obj=="Mostly Cloudy"){return "多云"}
else if(obj=="Cloudy"){return "云"}
else if(obj=="Sunny/Wind"){return "晴转云"}
else if(obj=="AM Clouds/PM Sun/Wind"){return "云转晴"}
else if(obj=="AM Showers"){return "晨雨"}
else{return obj}
}
//天气图片
var weaNum=weaimg(codeV)
function weaimg(obj){
return "<img src=\"http\://us\.i1\.yimg\.com/us\.yimg.com/i/us/we/52/"+obj+"\.gif\" />"
}
//星期替换
function dayEn(obj){
if(obj=="Sun"