求助AjaxSubmit提交后的问题
用ajaxSubmit提交的有个问题如何才能获得返回的值？
后台代码如下：
protected void Page_Load(object sender, EventArgs e) { string a = Request.Form["hello"]; string b = Request.QueryString["id"]; if (IsPostBack) { Response.Write("<script>alert('"+a+"');</script>"); } }<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title> </title> <script src='http://code.jquery.com/jquery-latest.js'></script> <script src='http://www.malsup.com/jquery/form/jquery.form.js?2.36'></script> <script> // prepare the form when the DOM is ready $(document).ready(function() { var options = { target: '#div', // target element(s) to be updated with server response beforeSubmit: showRequest, // pre-submit callback success: showResponse // post-submit callback // other available options: //url: url // override for form's 'action' attribute //type: type // 'get' or 'post', override for form's 'method' attribute //dataType: null // 'xml', 'script', or 'json' (expected server response type) //clearForm: true // clear all form fields after successful submit //resetForm: true // reset the form after successful submit // $.ajax options can be used here too, for example: //timeout: 3000 }; // bind to the form's submit event $('#form1').submit(function() { // inside event callbacks 'this' is the DOM element so we first // wrap it in a jQuery object and then invoke ajaxSubmit $(this).ajaxSubmit(options); alert('ok'); // !!! Important !!! // always return false to prevent standard browser submit and page navigation return false; }); }); // pre-submit callback function showRequest(formData, jqForm, options) { // formData is an array; here we use $.param to convert it to a string to display it // but the form plugin does this for you automatically when it submits the data var queryString = $.param(formData); // jqForm is a jQuery object encapsulating the form element. To access the // DOM element for the form do this: // var formElement = jqForm[0]; alert('About to submit: \n\n' + queryString); // here we could return false to prevent the form from being submitted; // returning anything other than false will allow the form submit to continue return true; } // post-submit callback function showResponse(responseText, statusText) { // for normal html responses, the first argument to the success callback // is the XMLHttpRequest object's responseText property // if the ajaxSubmit method was passed an Options Object with the dataType // property set to 'xml' then the first argument to the success callback // is the XMLHttpRequest object's responseXML property // if the ajaxSubmit method was passed an Options Object with the dataType // property set to 'json' then the first argument to the success callback // is the json data object returned by the server alert('status: ' + statusText + '\n\nresponseText: \n' + responseText + '\n\nThe output div should have already been updated with the responseText.'); } </script></head><body> <form id="form1" action="Default.aspx" runat="server"> <div id='div'> </div> <input type="text" value="aaa" /> <input type="submit" name="submitButton" value="Submit" /> </form></body></html>