Validation - Form That Submits A POST Request When Data Is Submitted
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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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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Jan 26, 2011
I made a shortened version of code:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js" type="text/javascript"></script>
<script src="http://www.ylakiudarzelis.lt/js/jquery.validate.js" type="text/javascript">
[code]....
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Sep 25, 2009
I have a form, on which I have multiple checkboxes and text fields.Now I want that the form can't submit untill at least 1 checkbox is selected or a text field is filled.But even with the javascript validation I already have the form still submits.Any help on this one?Here is the whole page on which the checkboxes, text fields and javascript validation are:PHP Code:
<script type="text/javascript" language="javascript">
function checkCheckBoxes() {
if (document.form2.nbs_vmb[].checked == false)
[code]....
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May 14, 2011
I have a multistep jquery form that validates user input and then should send me an email. Problem is, right now, I can only get it to validate the first page, then it sends the email before the rest of the pages are viewed. I'm just trying to delay the submission of the form until the "submit_fourth" button is pressed. I've got $25 via paypal for the one who sticks with this one for long enough to come up with a workable solution.
Here is my code I know it's a lot, but I wasn't sure how much would be HTML code is in the second post in this thread (it was just too much to fit in one go).
[Code]...
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Mar 2, 2006
I am having trouble finding a code example that uses javascript to get values from a form submitted on a previous page using the "POST" method. I've found some examples on how to parse the query string, but unfrotunately my form on the previous page has WAY too many charcters being submitted to be able to use the "GET" method (there is some upper limit here, I think it may be 255 or some number similar).
By the way this ONLY needs to work in IE, but it is better if it works in all browsers.
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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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Feb 19, 2011
I'm trying to submit form data to mysql database. The POST form action calls a javacript/ajax httpRequest. My php script has a redirect at the end of it on completion of data submission. My problem is after submitting the form, the redirection works, but no data is entered into database. I'm wondering if there is a problem with my httpRequest.
[Code]...
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Feb 8, 2011
I've built a form in a mobile app where the user chooses a photo from the camera roll, they hit an upload button and the image is submitted to my server. The file is renamed by the PHP script and moved to the correct folder. All this works great.
I need a way to send the new filename back to my app and I'm not sure how exactly to do that.
The reason I need the name back from the PHP script is because I will then ask my users of the app to fill in a title and description and then i just want to submit all of the data together.
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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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Oct 20, 2011
I'm having an issue when using a <button type="submit" with a form. The validation hook gets called but the form still submits regardless of the validation result. Is this a bug or mymisunderstandingof the button tag???BTW: I'm using a UI framework that generates Button tagsHere is a simple example
$(document).ready(function
(){
$("#processForm"
[code]....
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Jun 25, 2009
I have a issue with a javascript code that I wrote. This script is a simply for calculating the summation of 2 text input boxes and printing it in another text input box within the form. The entire form is then sent using Form post.The total is written back to the form's total text input box using the code below:
document.getElementById ('total').value = total
This code works perfectly for displaying the values on screen. However, when I send the form (PHP Post), the " total " field is empty. I have searched all over for possible solutions. But no solution yet.
1. document.getElementById ('total').INNERHTML = total .This does not even work on screen and total field is not updated on screen. Needless to say, the PHP Post variable was also empty.
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Dec 2, 2009
$DoCNO=$_POST["DoCNO"];
$NumAt=$_POST["NumAt"];
how to retain my $_POST value when it submitted my myform it seem when submit it will reset the value inside the $DoCNO and $NumAt value
java script:
Quote ... function testResults (form) {
var TestVar = form.inputbox.value;
[code]....
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Jul 20, 2005
can anybody help me in writing a javascript function which opens a
popup window with the target URL when the link "POST Request" is
clicked..
Points to note:
The HTML DOESNT and SHOULDNT HAVE A FORM TAG.
The URL data should be sent as POST and not GET..i.e the search
parameters should not be showin in the address bar when the page is
opened.
Sample code is:
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Feb 24, 2009
I have a form that will always live in a sidebar. It has 2 fields: 'zip code' and 'keyword'. I need the results of that form to...
#1. Trigger a page on my site that contains an iframe
#2. Append the form results to an external URL to load in that iframe. (example: www.externalsite.com/zipcode/keyword)
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Apr 1, 2010
I have a lot of tables and to get it to post some of the data into a form.
So say i have a location and a start date and end date, and when i select a radio and click submit the location and dates get put into the corresponding field in the form.
However i have a lot of tables and a lot of different options but want it to go to only one form. this form can be on a seperate page, but was wondering if its possible to get the form to appear on the same page, underneath the table.
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Jan 15, 2010
i need to post data from a form to a page on another domain, without leaving the current page.I am using ASP as a server language.
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Nov 13, 2009
I have a problem with sending data from a form to a php script with AJAX. To test if it works, I try to send data from the form, print it in the php with "echo", and then put it back in the initial html file.
My Javascript code is:
The function stateChanged, basically says:
The problem is that the response is empty, but I don't know why. I have checked the input data and the postData variable says "firstName="+input (e.g. "firstName=Robert"), so that's not the error.
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May 25, 2010
I've got a form which is acting as a calculator. Once the calculation is complete I want it so when the user presses a 'print' button it takes certain parts of the form data and displays them in a new window which would be designed for printing.
how can i go about this using only javascript?
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Apr 13, 2010
I am working on an application and it needs to access a third party service through an iFrame. I basically need to know how I can have Javascript autofill the fields and then submit the form that is contained in an iframe. Is this possible?
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Apr 18, 2010
The server i'm trying to post data to in an ajax call expects data in xml format, including a particular attribute value. I have to use Chrome browser which does not support the XML Class (e4x).
I tried to marshal my data as follows:
But the ajax call does not appear to transfer the xml data to the server even though the xmlhttprequest call appears ok in Chrome's developer tool console.
I'm wondering whether I'm forming the xml formatted data correctly.
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Mar 1, 2010
i'm using greybox on my website, and using survey. i want when click submit button then post form data to opened greybox window.. but can't..
my form actions
<form action="anket.php?islem=ok" method="post" onSubmit="javascript:return GB_showCenter('Anket',this.action, 280, 350)" >
greybox window open, but can't show post data..
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Mar 2, 2011
I have implemented a page based on tabs. Now how to submit the data is it just have the submit button on the last tab is it? On the other hand how best to show the error because there might be some fields not fill in the first tab itself and the user might be in the last tab.
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May 23, 2011
Very new to JavaScript so I'm sorry if this is a daft question, I have searched for answers first and could not find anything that works for me ... so .. One html form with two submit buttons. On submit (save changes) posts back to the same page and updates a database. The other submit button (preview) should open a op-up showing what the data would look like if the user should press save.
[Code]...
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May 6, 2010
I have a problem where if a form submission (set up to submit via AJAX) fails validation, the next time the form is submitted, it doubles the number of post requests - which is definitely not what I want to happen. I'm using the jQuery ValidationEngine plugin to submit forms and bind validation messages to my fields. This is my code below. I think my problem is that I need to unbind from the validationEngine plugin when the form fails, but I can't figure out how to do this.
[Code]...
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