从JavaScript客户端调用ASP.net Web服务

问题描述：

我有一个previously编写客户端 - 服务器应用程序（由另一个程序员）。该客户端写的JavaScript。我需要编写与ASP.net一个新的Web服务，但我不知道如何调用Web方法。我sitation是从JavaScript 这里描述调用Web服务一样但它并没有一个明确的答案。（只是说使用WCF，我不知道该怎么做）（请注意，我的客户是来自服务器的完全不同的项目，假设它是写在Eclipse）我想知道我可以调用默认情况下，在AA ASP.net Web服务创建的HelloWorld的方法，从简单的HTML code（包括JS）

I have a previously written client-server application(by another programmer). The client side is written with javascript. I need to write a new web service with ASP.net but I don't know how to call web methods. My sitation is the same described here Call web service from javascript but it doesn't have a clear answer. (just says use WCF, I don't know how to do it) (note that my client is a totally different project from the server, suppose it is written in eclipse) I want to know how I can call the HelloWorld method that is created by default in aa ASP.net web service, from a simple html code(including js)

谢谢，埃拉

答

请参考以下链接希望会为您提供如何使用JavaScript / Asp.net的Ajax或jQuery来调用Web服务的完整指南。

refer the following links wish will provide you complete guide on how to call web service using JavaScript/Asp.net Ajax or jQuery.

的http://cmsnsoftware.blogspot.com/2011/01/how-to-call-csharp-function-in-ajax.html

的http://cmsnsoftware.blogspot.com/2011/02/how-to-use-ajax-auto-complete-in-aspnet.html

样品code

if (window.XMLHttpRequest) {
    // for IE7+, Firefox, Chrome, Opera, Safari
    this.xmlhttp = new XMLHttpRequest();
}
else {
    // for IE6, IE5
    try {
        this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e1) {
        try {
            // older version of Msxml
            this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        } catch (e2) {
            this.xmlhttp = null;
        }
    }
}
xmlhttp.onreadystatechange = function() {
    /// <summary>
    /// Display server time when success
    /// </summary>
    if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
        // success Status
        alert(xmlhttp.responseText);
    }
}
this.xmlhttp.open("POST", "AjaxServer.asmx/WebMethodName", true);
this.xmlhttp.send();

从JavaScript客户端调用ASP.net Web服务

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