To solve cross-origin ajax problems, the following methods are provided on the Internet:
1 is to build a server-side proxy. In short, it means that the essence of ajax calls is the local url, and the server side retrieves the remote address for js.
2. Generate
Label. After loading js, perform subsequent operations.
That is, the new xmlHTTPrequest object operation is changed to the new script tag operation.
Here is an example:
# Ajah. js
Var Ajah = function (url, varname, handleSuccess, handleFailure )...{
/**//**
* HandleSuccess, handleFailure must be functions
**/
Script = document. createElement ("script ");
Script. src = url;
Var handler = function (str)
...{
HandleSuccess (str );
}
Script. onload = function ()
...{
Var json = eval (varname );
Handler (json );
}
If (window. ie)
...{
Script. onreadystatechange = function ()
...{
If (script. readyState = 'complete' | script. readyState = 'loaded ')
...{
Var json = eval (varname );
If (typeof json! = 'Undefined ')
...{
Handler (json );
}
}
}
}
Document. body. appendChild (script );
}
In the web page, you should call the following method:
Includemo.html
<Pre>
<! DOCTYPE html PUBLIC "-// W3C // dtd html 3.2 // EN">
<Html>
<Head>
<Meta name = "generator" content =
"HTML Tidy for Linux (vers 1 September 2005), see www.w3.org">
<Title> </title>
<Script src = "mootools. js"> </script>
<Script src = "ajah. js"> </script>
</Head>
<Body>
<Script>...
Var ajah = new Ajah ("data. js", "json198", function (str )...{
Console. debug ("returned :");
Console. debug (str );
},
Function (str )...{});
</Script>
</Body>
</Html>
</Pre>
The called data file is as follows:
# Data. js
Var json198 = "hello, this is json198 ";
Funciton Ajah (url, varname, handleSuccess, handleFailure ){...}
The Ajah constructor calls four parameters:
Url: Remote address
Varname: variable name of the remote returned data
HandleSuccess: function loaded after loading
HandleFailure: Temporarily unavailable