Ajax XMLHttpRequest Post get

/* When there are Chinese parameters, the receiver needs to use the UTF-8 method to decode the data
* Post attachments are not supported.
*/

Function getxmlhttprequest (){
VaR XMLHttpRequest = NULL;
Try {
XMLHttpRequest = new activexobject ("msxml2.xmlhttp ");
}
Catch (E1 ){
Try {
XMLHttpRequest = new activexobject ("Microsoft. XMLHTTP ");
} Catch (E2 ){
XMLHttpRequest = NULL;
}
}
If (XMLHttpRequest = NULL & typeof (XMLHttpRequest )! = 'Undefined '){
XMLHttpRequest = new XMLHttpRequest ();
}
Return XMLHttpRequest;
}

/* Use post to send data
* URL: Submit path
* Arguments: parameters, such as name = jese & sex = womanz. Use 'name = '+ getencodeuricomponent ('lily') for Chinese data ') + '& sex =' + getencodeuricomponent ('male') Encoding
* Synchflag: Synchronous flag. "false" indicates the synchronous mode, and "true" indicates the asynchronous mode.
* Returntype: returned content type 0 = responsebody; 1 = responsestream; 2 = responsetext; 3 = responsexml
* Execute: the callback function submitted asynchronously. This function is used to process the returned data. The format is function (OBJ) {}, and obj is the returned content.
*/

Function postdata (URL, arguments, synchflag, returntype, execute ){
VaR XMLHttpRequest = getxmlhttprequest ();
If (XMLHttpRequest = NULL) return false;
XMLHttpRequest. Open ("Post", URL, synchflag );
XMLHttpRequest. setRequestHeader ("Content-Type", "application/X-WWW-form-urlencoded ");
XMLHttpRequest. setRequestHeader ("Content-Length", arguments. Length );
If (synchflag ){
XMLHttpRequest. onreadystatechange = function (){
If (XMLHttpRequest. readystate = 4 ){
Switch (returntype ){
Case 0: Execute (XMLHttpRequest. responsebody); break;
Case 1: Execute (XMLHttpRequest. responsestream); break;
Case 2: Execute (XMLHttpRequest. responsetext); break;
Case 3: Execute (XMLHttpRequest. responsexml); break;
Default: Alert ("error ");
}
}
}
}
XMLHttpRequest. Send (arguments );
If (! Synchflag ){
Switch (returntype ){
Case 0: Return XMLHttpRequest. responsebody; break;
Case 1: Return XMLHttpRequest. responsestream; break;
Case 2: Return XMLHttpRequest. responsetext; break;
Case 3: Return XMLHttpRequest. responsexml; break;
Default: Return false;
}
}
}

/*
* Use get to send data
* URL: Submit path
* Arguments: the parameter, such as name = jese & sex = male. The Chinese data department must be encoded.
* Synchflag: Synchronous flag. "false" indicates the synchronous mode, and "true" indicates the asynchronous mode.
* Returntype: returned content type 0 = responsebody; 1 = responsestream; 2 = responsetext; 3 = responsexml
* Execute: the callback function submitted asynchronously. This function is used to process the returned data. The format is function (OBJ) {}, and obj is the returned content.
*/

Function getdata (URL, arguments, synchflag, returntype, execute ){
VaR XMLHttpRequest = getxmlhttprequest ();
If (XMLHttpRequest = NULL) return false;
XMLHttpRequest. Open ("get", URL + "? "+ Arguments, synchflag );
If (synchflag ){
XMLHttpRequest. onreadystatechange = function (){
If (XMLHttpRequest. readystate = 4 ){
Switch (returntype ){
Case 0: Execute (XMLHttpRequest. responsebody); break;
Case 1: Execute (XMLHttpRequest. responsestream); break;
Case 2: Execute (XMLHttpRequest. responsetext); break;
Case 3: Execute (XMLHttpRequest. responsexml); break;
Default: Alert ("error ");
}
}
}
}
XMLHttpRequest. Send ();
If (! Synchflag ){
Switch (returntype ){
Case 0: Return XMLHttpRequest. responsebody; break;
Case 1: Return XMLHttpRequest. responsestream; break;
Case 2: Return XMLHttpRequest. responsetext; break;
Case 3: Return XMLHttpRequest. responsexml; break;
Default: Return false;
}
}
}

/*
* Post Chinese data is used, and get data is not used
*/
Function getencodeuricomponent (arguments ){
Return encodeuricomponent (arguments );
}

/*
* Example
* Alert (postdata ('t. jsp ', 'name =' + getencodeuricomponent ('shen Shen '), false, 2, null ));
* Alert (getdata ('t. jsp ', 'name = Day', false, 2, null ));
* Postdata ('t. jsp ', 'name =' + getencodeuricomponent ('shen Shen '), true, 2, function (OBJ) {alert (OBJ );});
* Getdata ('t. jsp ', 'name = Day', true, 2, function (OBJ) {alert (OBJ );});
*/