JavaScript用JQuery呼叫Server端方法教程示例代码

准备好server端的方法

[system.web.services.webmethod]
public static string veryusername(string name)
{
string rtn = "恭喜，此帐号还没有注册，你可以使用。";

if (name == "")
rtn = "请填写一个注册帐号。";

if (name == "insus.net")
rtn = "此用户已经注册，请使用另外帐号。"; 

return rtn;
}

html代码：

<asp:textbox id="textboxaccount" runat="server"></asp:textbox><br />
<input id="btnrreg" type="button" value="注册" onclick="veryregaccount()" />

javascript脚本：

<script src="scripts/jquery-1.3.2.min.js" type="text/javascript"></script> 
<script type="text/javascript"> 
function veryregaccount() { 
$.ajax({ 
type: "post", 
url: "default.aspx/veryusername", 
data: '{name: "' + $("#<%= textboxaccount.clientid%>")[0].value + '" }', 
contenttype: "application/json; charset=utf-8", 
datatype: "json", 
success: onsuccess, 
failure: function (response) { 
alert(response.d); 
} 
}); 
} 
function onsuccess(response) { 
alert(response.d); 
} 
</script>