Insus.net has been learning JavaScript since 2013, the first time using jquery to call the server side of jquery from JavaScript clients.
First Look at the demo of this example：
How to prepare the server side：
Copy Code code as follows:
[System.Web.Services.WebMethod]
public static string Veryusername (string name)
{
String RTN = "Congratulations, this account has not yet registered, you can use." ";
if (name = = "")
RTN = "Please fill in a registered account number." ";
if (name = = "Insus.net")
RTN = "This user is already registered, please use another account number." ";
return RTN;
}
HTML code：
Copy Code code as follows:
Account:
<asp:textbox id= "Textboxaccount" runat= "Server" ></asp:textbox><br/>
<input id= "Btnrreg" type= "button" value= "register" onclick= "Veryregaccount ()"/>
JavaScript script:
Copy Code code as follows:
<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>
refer to the following syntax：
