@Prog! - ASP.NET(C#) AJAX -

[System.Web.Script.Services.ScriptService()]
public class WebService : System.Web.Services.WebService {

    public WebService () { }

    [WebMethod]
    public string HelloWorld() {
        return "Hello World";
    }
}

WebServiceのURLに「/js」を付ける。
http://localhost/AJAXEnabledWebSite/WebService.asmx/js

// js.txt
var WebService=function() {
WebService.initializeBase(this);
this._timeout = 0;
this._userContext = null;
this._succeeded = null;
this._failed = null;
}
WebService.prototype={
HelloWorld:function(succeededCallback, failedCallback, userContext) {
return this._invoke(WebService.get_path(), 'HelloWorld',false,{},succeededCallback,failedCallback,userContext); }}
WebService.registerClass('WebService',Sys.Net.WebServiceProxy);
WebService._staticInstance = new WebService();
WebService.set_path = function(value) { WebService._staticInstance._path = value; }
WebService.get_path = function() { return WebService._staticInstance._path; }
WebService.set_timeout = function(value) { WebService._staticInstance._timeout = value; }
WebService.get_timeout = function() { return WebService._staticInstance._timeout; }
WebService.set_defaultUserContext = function(value) { WebService._staticInstance._userContext = value; }
WebService.get_defaultUserContext = function() { return WebService._staticInstance._userContext; }
WebService.set_defaultSucceededCallback = function(value) { WebService._staticInstance._succeeded = value; }
WebService.get_defaultSucceededCallback = function() { return WebService._staticInstance._succeeded; }
WebService.set_defaultFailedCallback = function(value) { WebService._staticInstance._failed = value; }
WebService.get_defaultFailedCallback = function() { return WebService._staticInstance._failed; }
WebService.set_path("/AJAXEnabledWebSite/WebService.asmx");
WebService.HelloWorld= function(onSuccess,onFailed,userContext) {WebService._staticInstance.HelloWorld(onSuccess,onFailed,userContext); }