You can directly use the background program to capture weather information across domains.
Currently, firefox is fully supported.
Copy codeThe Code is as follows: <! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>
<Title> untitled document </title>
<Script language = "JavaScript" type = "text/javascript">
Function $ (){
Return document. getElementById (arguments [0])
}
Function btnSty (objId, objStyle)
{
$ (ObjId). style. display = objStyle
}
// Prompt window control
Function ifodis (){
BtnSty ('loadifo', 'None ');
}
Function settime (){
SetTimeout (a, 1000 );
}
Function loadtime (){
$ ("Loadifo"). innerHTML + = "."
}
// XML Data Binding
Var xmldoc = false;
Function loadurl (n ){
// Generate a random number and limit the number of refreshes
Var now = new Date ();
Var Num = now. valueOf ();
// Define the forward Parameters
Url = "weather. asp? N = "+ n +" & id = "+ Num;
// Defined as asynchronous transmission mode
Xmldoc = false;
// The XMLHttp class that needs to be created when the browser such as Safari is killed
If (window. XMLHttpRequest ){
Xmldoc = new XMLHttpRequest ();
If (xmldoc. overrideMimeType ){
Xmldoc. overrideMimeType ('text/xml ');
}
}
// XMLHttp class created in IE browser
Else if (window. ActiveXObject ){
Try {
Xmldoc = new ActiveXObject ("Msxml3.XMLHTTP ");
}
Catch (e ){
Try {
Xmldoc = new ActiveXObject ("Msxml2.XMLHTTP ");
}
Catch (e ){
Try {
Xmldoc = new ActiveXObject ("Microsoft. XMLHTTP ");
}
Catch (e ){}
}
}
}
// Return when the XMLHTTP class cannot be created
If (! Xmldoc ){
Return false;
}
// Call the CheckState Function
Xmldoc. onreadystatechange = CheckState;
Xmldoc. open ('get', url, true );
Xmldoc. send (null );
}
// Status detection
Function CheckState (){
BtnSty ('loadifo ','')
// Receives the complete Server Response
If (xmldoc. readyState = 1 ){
$ ("Loadifo"). innerHTML = "connect to server"
}
Else if (xmldoc. readyState = 2 ){
$ ("Loadifo"). innerHTML = "start to load data"
}
Else if (xmldoc. readyState = 3 ){
$ ("Loadifo"). innerHTML = "loading data"
Settime (loadtime)
}
Else if (xmldoc. readyState = 4 ){
// The HTTP server response value is successful.
If (xmldoc. status = 200 ){
// Write the string returned by the server to the area where the ID is showdiv in the page.
$ ("Loadifo"). innerHTML = "loaded"
Var response = xmldoc. responseText;
Settime (ifodis)
$ ("Prolist"). innerHTML = response;
}
Else {
$ ("Loadifo"). innerHTML = "error" + xmldoc. statusText + "Please reselect ";
}
}
}
</Script>
<Style type = "text/css">
<! --
Body {
Margin: 0px;
Padding: 0px;
Font-size: 9pt;
}
-->
</Style>
</Head>
<Body onload = "loadurl ('chxx0138 ')">
<Div>
<Select onchange = "loadurl (this. value)">
<Option value = "CHXX0138" selected = "selected"> Wuhan </option>
<Option value = "CHXX0097"> Nanchang </option>
<Option value = "CHXX0502"> Haikou </option>
<Option value = "CHXX0008"> Beijing </option>
<Option value = "CHXX0116"> Shanghai </option>
<Option value = "CHXX0037"> Guangzhou </option>
<Option value = "CHXX0259"> Yinchuan </option>
<Option value = "CHXX0165"> Zhengzhou </option>
<Option value = "CHXX0013"> Changsha </option>
<Option value = "CHXX0390"> Hangzhou </option>
<Option value = "CHXX0049"> Hong Kong </option>
<Option value = "CHXX0146"> Xi'an </option>
<Option value = "CHXX0016"> Chengdu </option>
<Option value = "CHXX0110"> Qingdao </option>
<Option value = "CHXX0039"> Guiyang </option>
<Option value = "CHXX0064"> Jinan </option>
<Option value = "CHXX0448"> Hefei </option>
<Option value = "CHXX0031"> Fuzhou </option>
<Option value = "CHXX0099"> Nanjing </option>
<Option value = "ITXX0042"> Milan </option>
</Select>
<Span id = "loadifo"> </span> </div>
<Div id = "prolist"> </div>
</Body>
</Html>
