JQuery :: Getting Undefined Message From Post Request?
May 23, 2010
I don't know the reason of getting the message as 'undefined' in alert dialog box, whenever I do the post request to servlets from jquery after clicking login button.Here's the code which's making me bugged:
$.post("Check.do", $('#form').serialize(),
function(data){
alert(data.message); //displaying undefined
});
}
the request is passing to servlets(which is mapped to Check.do URL), and in doPost method in servlets I'm just doing: response().getWriter().write("Hello");May I know the what's the reason of getting error in above code, and how can I sort this problem out?
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Jun 30, 2009
I was guessing if it was possible, using jQuery, to have a link that, when clicked, opens the relative url and sends to it a post request. I'm trying to do this with the $.post function, but i found the problem that the request is sent, but the page isn't opened.
This is my code:
<html>
<head>
<script type="text/javascript" src="jquery.js"></script>
[Code]....
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Jul 24, 2010
I have some trouble with my app. User enters his login&pass, they are being checked on server using ajax, and if they're ok, i wanna open new page, which'll set cookies and session vars, but i have an universal script, and I need request something like universalScript?mode=login (mode is GET) and some POST parameters such as login and pass, besides it must be new page, not ajax, Some ideas?
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Jun 7, 2011
Whats wrong with following jquery ajax post request in google chrome? The function is not called after successful response from server. It works on IE but not on chrome. Also can somebody tell how to redirect from browser after making successfull jquery call which works in all the browsers including chrome. The below redirect works in IE but not in chtome
<script> function submit1(){
$.post('/TestAJAX/result.jsp', function(data){
alert("Hi");
window.location.href=data;
}
);
}
[Code]..
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Aug 24, 2009
can jQuery display response from .post request in realtime? I force buffer flush in PHP with ob_start, and ob_flush, I know that I can set target='iframeID' to my form, but I need ajax and target should be div.
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May 14, 2009
I've been trying to figure out how to echo back error messages from a PHP edit page, for example. Say if I am editing a grid and sending that info with json to a php page to update a database, if there is a validation or other problem, how do I echo that back on the page with the jquery? Do I put that in a div container too for best practice?
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Sep 19, 2010
I'm poking around with objects and the differences of creating a variable outside an object and inside an object. Here's my code.This is just before the closing body tag:
Code JavaScript:
<script type="text/javascript">
// Creating an object[code]....
When i reload the page, i get an alert box stating the 1st message "Hello there" When i click on OK on the alert prompt. I get another prompt that says Undefined. I tried experimenting and found out that if i call the another() function within myObj without alerting it like so:
Code JavaScript:
myObj.another();
Then i just get an alert prompt with "Hello there" only...the second undefined message doesn't appear.
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Jan 12, 2010
I started getting a wierd problem with my jscript program. Here im using jscript for client-side validation and upon email field submission,im getting undefined value with an error saying "length is null or not an object". All the values of fields prior to that are being obtained properly.
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Jan 30, 2011
Firebug returns an error saying msg.elements is undefined. I'm trying to make a function that will enabled a delete button if any of the check boxes in a list are checked.
function selectone () {
var msg = document.getElementsByName('pm');
var i = 0;
for(i; i < msg.elements.length; i++){
if(msg.elements[i].checked == true){
document.getElementById('multiple_action').disabled = false;
document.getElementById('drop_button').setAttribute("class", "drop_button");
}else{
document.getElementById('multiple_action').disabled = true;
document.getElementById('drop_button').setAttribute("class", "drop_button disabled");
}}}
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Nov 14, 2011
I'm getting an error message that says that my function is null or undefined. I figure it' something simple, like maybe a ( instead of {, but I can't seem to find it.
Here's the script from the header:
Code:
<script type="text/javascript">
var time = new Date();
var dayNight = time.getHours();
function displayImage() {
if (dayNight >= 9 && dayNight <= 14) { .....
And from the body:
Code:
<body onload="displayImage()">
<div>
<img id="highlights" src="" alt=""/>
</div>
</body>
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Oct 25, 2005
My requirement is like this,we have 2 text fields called name
and number and one button named submit.when ever we click the submit
button then we need to store the page information(form values) into our
database and need to post this form values to some other site
(eg:action="google.com/signup.aspx"). How to do this in asp.net please
send me the code.
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Jun 6, 2007
Is there a way to make a javascript post request to MyPage.aspx,
set a variable on MyPage.aspx, then do a javascript redirect to
MyPage.aspx and still sustain the value of the variable posted to the
page in the first place? As of now i'm successfully posting to my aspx
page, and successfully redirecting as well, but i have been
unsuccessful with sustaining that variable. I've tried using ViewState
as well as Session, neither seem to work exactly how i'd like.
Essencially, I'm trying to send a post request as well as redirect to
the same page Code:
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Jul 23, 2005
I tried POSTing from XMLHttpRequest, i can get the XML right on server
but responseXML from server is coming null. I can see the XML right in
responseText. but responseXML is null. responseText to DOM conversion
also fails while the XML in responseText seems valid ..
-- here is the javascript code for sending ---
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Mar 30, 2007
Currently transitioning from a shared host to a dedicated server. The
same code that works on the old server is not working on the dedicated
server. It is a simple AJAX request like:
<code>
function createXMLHttpRequest() {
if (window.ActiveXObject) {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else if (window.XMLHttpRequest) {
xmlHttp = new XMLHttpRequest();
}
}
function doRequestUsingPOST() {
createXMLHttpRequest();
var queryString = "response.php?";
queryString = queryString + createQueryString() ;
xmlHttp.onreadystatechange = handleStateChange;
xmlHttp.open("POST", queryString, true);
xmlHttp.send(null);
}
</code>
With the code as is above, the requests works fine in IE. With Firefox
it throws a 403 on the page. A call to the response.php page with
parameters runs correctly outside of AJAX. Changing all POST requests
to GET resolves the issue, but I would prefer not to have to change
ALL POST requests to GET requests.
Does anyone know of a setting on the new server that can cause FireFox
(1.5.x and 2.0.x) to return a 403 with an AJAX post call?
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Aug 2, 2007
All Ajax libraries I've read use encodeURIComponent() on the name-value pairs extracted from forms before POST ing the result to the server with and xmlhttprequest. I can understand why this encoding is required in the case of a GET request and the form data is attached as a URI query string; however, why is the encoding necessary for POST requests?
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Jan 2, 2011
How can I do a post request to another page from javascript ? Actually I only need to pass data to another script through a post request.
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Jul 27, 2006
I am trying to send request using ajax with some japanese text.
As any of you know XMLHttpRequest is send with utf-8.
I was hoping there is a way to send with different encoding like
var parameters = "metadata=" +
encodeURI(document.getElementById("metadata").value);
http_request.onreadystatechange = metadataUpdate;
http_request.open( 'POST', "/servlet/SendJapText", true );
http_request.setRequestHeader( "Content-type",
"application/x-www-form-urlencoded;charset=Shift-JIS" );
http_request.send( parameters );
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Aug 13, 2009
I have this code w/c makes a post request.
Code:
// start ajax code
var http_request = false;
function makePOSTRequest(url, parameters) {
http_request = false;
[Code]...
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Dec 9, 2011
I am analyzing header tags for submitting forms online in order to better understand how htmlhttp forms work- signing in to gmail, yahoo mail, and amazon, using the network tab of google developer tools, to view the http headers of requests and responses, and learn where they come from. I am seeing very peculiar behavior in my browser's (chrome)request headers when signing into amazon. The form data, always has the following two header names appended to the second and third to last places of the form data query: x=(some random number), and y=(some random number).
There are no input tags getting dynamically generated,since when i tell google chrome to break on all subtree modifications, the site still sends off the post with the added parameters before anything gets modified, BEFORE crashing. There also is NO ajax call which is causing dynamically added data to be appended to the form post.My question is this: is there any way, using javascript, to instruct a browser, to append data as data, to a form post, WITHOUT the use of dynamically appended input elements, or ajax?
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Dec 9, 2009
I have a form that submits a POST request when data is submitted.
A Servlet then processes this POST request and a JavaBean is used to make some calculations. The HTML response is not generated within the Servlet but instead I forward the request to a JSP to generate the response. - This all works fine.
However, I am stupidly suck trying to validate the form on the client side with a Javascript function before the form is submitted.
Here is my index.jps:
Regardless of whether incorrect input is given, the data is still POSTed to the server and calculated on or a Server Side error is given.
Am I correct in calling the function onclick?
The validation essentially needs to be so that:
- Student field contains a string
- Score1, Score2, Score3 and Score 4 contain a number between 0 and 100
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Jul 22, 2011
I am writing a small data entry screen that will post the form data to a page and return a message. But i cannot get the Success or Error functions working properly.
Here's the code where strData is the posted querystring of:
I'm not sure whether it should be in a form and using the onsubmit or click of a button.
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Jun 2, 2009
I worked with now in jQuery. Property however at present the following problem: [i]I provide a AJAX Request. the side is loaded, the parameters all conveyed and back receives I a complete HTML side. Now I would like to have only certain elements however from this side, like DIV, SPAN etc. How can I make with the AJAX Request return in such a way best, which I can select these elements thereby? Simply it would be unfortunately not functioned over the function $ (element), it even if I indicate the HTML Request as secondly parameter.[/i] Excused, for my bad English. ;-) Translatertool. There is unfortunately too many words, in order to describe my problem. ^^
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Oct 16, 2010
I have a php page which returns a table representing a query sent to a MySQL database. So far it has worked in every case except now that I'm trying to use it to call a stored procedure, in which case the readystate is staying at 1 and never completing.
I have logged the results of the php file both in an error log and looked at the response from the request using firebug, both of which show a correct result.
Why isn't this returning properly?
Here are the relevant javascript functions:
Code:
function customizeType()
{
$("custom-header").innerHTML = "";
$("custom-top").innerHTML = "";
[Code]....
After the page loads, the error log shows correct results for all queries.
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Aug 17, 2010
I want to run an external function outside the post.
This is what I have currently.
On success of the post I want to run the setGrandTotal(); function which will do some calculating for me.
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Oct 11, 2011
How can I post array of controls through &.post() in jQuery??I have some of checkboxs in my page and declare them like this
<input name="mycheckbox[]" "value="myvalue" type="checkbox">
I can get it works if I using <form> tag with an action="post" and a submit button to post to another php page by using this statement to get all controls in receiver's page _GET['mycheckbox'];I have tried
$.post('ajax/test.php", {checkbox: $
(
'input[name="mycheckbox"]'
)});
[code]....
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Dec 6, 2011
I just started using jQuery, but i can't get it working. On the index.php page I want a search form, that post's to search.php. Following next, I want that the html of search.php (which will only be a table with the results), is show into the 'results' div in the index.php.
This is the code im using:
<script type="text/javascript">
/* attach a submit handler to the form */
$(document).ready(function(){
alert("Ok - 1");
[Code].....
The alert's are for debugging, but none of them show's up.
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