Compatibility of Ajax in different browsers (Asp.net, ie, Firefox)

Ajax compatibility problems in different browsers are troublesome. I encountered this problem in my recent project. I used a strange method to solve it. Now I will discuss it with you:

Below is the front-endCode:

<SCRIPT type = "text/JavaScript">

VaR XMLHTTP;

VaR;

VaR state = 0;

Function Mouseover ()

{

VaR id = "<% = cve_mail.clientid %> ";

 

Getajax ();

If (as = 0)

{

Alert ("Your webbrowser do not support our service, choose IE7 or Firefox and try again! ");

}

Else

{

// The bonding event is also different during the return.

If (as = 1)

{

XMLHTTP. onreadystatechange = myresponsehandler;

}

Else

{

XMLHTTP. onload = myresponsehandler;

XMLHTTP. onerror = myresponsehandler;

}

// If you select get as the open method, it is strange that the Firefox processing end cannot receive the passed parameters.

// The last parameter is also different here. If this parameter is not set, the returned responsetext may be empty.

If (as = 1)

{

XMLHTTP. Open ("Post", "Ajax. ashx", true );

}

Else

{

XMLHTTP. Open ("Post", "Ajax. ashx", false );

}

XMLHTTP. Send (document. getelementbyid (ID). value );

}

};

Function getajax ()

{

// The first step is to create different

Try {

XMLHTTP = new activexobject ("Microsoft. XMLHTTP ");

As = 1;

} Catch (e ){

Try {

XMLHTTP = new activexobject ("msxml2.xmlhttp ");

As = 1;

} Catch (e ){

Try {

XMLHTTP = new XMLHttpRequest ();

As = 2;

 

} Catch (e ){

XMLHTTP = NULL;

As = 0;

}

}

}

}

 

Function myresponsehandler ()

{

VaR id = "<% = hidebutton. clientid %> ";

If (XMLHTTP. readystate = 4)

{

Document. getelementbyid (ID). value = XMLHTTP. responsetext;

}

};

 

</SCRIPT>

Backend code (Asp.net ):

Public class cajax: ihttphandler

 

{

Public void processrequest (httpcontext context)

{

// First read the value passed by the front end

 

Httprequest request = context. request;

System. Io. Stream S = request. inputstream;

Int COUNT = 0;

Byte [] buffer = new byte [1024];

Stringbuilder builder = new stringbuilder ();

While (COUNT = S. Read (buffer, 0, 1024)> 0)

{

Builder. append (encoding. utf8.getstring (buffer, 0, count ));

}

String request = builder. tostring (); // request is the passed parameter.

..................

// Result indicates the result to be returned.

Context. response. Write (result );

}

}

This solution I in Firefox, ie, roaming inside all tested no problem, if interested can send me a mail: zhaotiantang520@live.cn