JQuery :: Concise Tutorial To Do Remote Validation Of Forms
Jul 19, 2011
I'm brand new to jQuery, and I am really interested in learning about it because of the potential it offers to enhance my webpages. To give you some background, I am self-taught in PHP and MySQL...not on a master's level, but I have designed and built database-driven sites with success and am confident that I can learn jQuery if only I could get pointed in the right direction. I have perused tutorials, links, forums and recently bought the jQuery Cookbook (I needed SOMETHING to go on and it was one of the few jQuery books at the local bookstore that felt as though it would be of help). My problem is, I am finding gaps in information that, to me, are critical to learning. I am looking for a nut-and-bolt approach, 'Do this, then do that' not the typical generalizations I keep encountering.
All I want to do to start with is to remotely validate a two-item form, you guessed it, username and email, against the contents of my database (the info for the validation plugins is just as vague and general). That's it. But the tutorials and examples are vague to me, and in one instance, a link was posted offering to display the server-side validation code used and the link was dead. I can't be the only person here who is stonewalled by these thoughtful, yet overly-general tutorials and books. if any of you have suggestions where I can find a concise, true step-by-step tutorial or book, I would love to know. Right now, it's just one frustrating day of research after another.
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Jun 13, 2011
I am trying to use asp for remote validation instead of php. But it did not work. This is whatI tried.
$(document).ready(function() { var validator = $("#Member_Form").validate({
rules: { Member_Name: {
required: true,
minlength: 2,
remote: "users.asp"
}, },
messages: { Member_Name: {
required: "Enter a username",
minlength: jQuery.format("Enter at least {0} characters"),
remote: jQuery.format("{0} is already in use")
}, }});
Also how is the member name passed to the asp page. I tried reading it as query string. But it did not work.
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Jan 12, 2011
I already have the remote check working and it works fine. But the catch is that I want to allow submission even if my check returns false.
All I really want is to show a warning if the remote check returns false.
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Aug 25, 2009
i have 2 fields in my form with 1 being currently validated with aremote method (say Field B).I would like to make a dependency between fieldA and fieldB so i triedto add a blur function on field A with jQuery("#FieldB").valid()but when i change FieldA's value no remote validation occurs becausethere is a check (if value != previous value)is there a way for me to disable this cache
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Jul 23, 2009
I've got some strange behavior with validation. I'm loading up a form to allow editing of an existing database entry. If I make my changes to the fields, enter in the required "revision comments" and submit, the page does NOT post, it seems to only refresh and empty out all the entries in each of the fields. Now, on the other hand if I open the form to make changes to a database entry and immediately press "Submit" without filling in the revision comments field, it fails validation and tells me to enter comments. Now if I fill in comments to satisfy all the requirements and press submit, it posts and I get my "Successful Entry" confirmation prompt. I think I've narrowed it down to the remote: part of my jQuery. I eliminated by trial-and-error the other pieces of the jQuery code and it seems that when I remove the remote: it does not experience this strange behviour.
jQuery Code:
[code]
// Form Validation customization
$("#Form_business").validate({
rules: {
[Code].....
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Feb 9, 2011
jquery.validation remote method doesn't work with jquery 1.5.0
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May 19, 2009
[Code]...
my only issue is whenever 1st time it checks the record if found record it display message Record Found but whenever i try to change my textbox value it still gives me this message. it does not get reset if record not found.
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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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May 15, 2009
$("#Form").validate({
rules: {
storename_name: {
[code]....
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Sep 29, 2009
I have built out a fairly rhobust app using jquery and jquery-ui all was going well until we started to bring different screens together inside a tabbed interface. Seems that now when we execute our validation code on one form its checking the fields of all other forms on the page.All of my forms do have unique ID's and all elements within all forms have unique ID's.My understanding of using this.find inside of the submit event was that it should only find the forms elements am I wrong? Method that performs the actual validation:
function validateForm(event){
var allOk = true;
$(this).find("*[validation]").each(function(){[code]....
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May 5, 2009
JQuery newbie question re using validation plugin with Django newform.I have a simple email feedback contact django form that I wanted toenhance with some JQuery validation. I created a standalone (NonDjango) version of the form and it works correctly.However when I create a Django version of the form the validationrules seems to be ignored and the form is always posted - I wouldexpect the form to fail, and never post. One difference (not sure ifit's siignificant) is that the Django forms are created from classes/templates and render as tables. However the exact same HTML code worksfor the basic form.I'm now thinking that there must be something different re how thesubmit is being processed for the Django form - but I'm stumped.
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Apr 4, 2011
I've used the excellent validate plugin (http://bassistance.de/jquery-plugins/jquery-plugin-validation/) to add JS validation to forms. I'm aware there's a built-in setting to validate an email address. However, I'd like to validate a list of email addresses, and I don't think the plugin contains a built-in solution. What's the best way to implement this?
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Mar 13, 2006
I have to validate this stupid form as well as check to see if there is cookies and add them if they haven't. I know most of you probably are pros at this! So I am requesting some assistance. Please see the code attached, let me know what to do. As well I can't get something that will work with my radio buttons to validate as well as cookies. Code:
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Aug 11, 2010
In another thread I found that a good way to show and hide parts of a form based on previous entries would be as follows:
function showhidefield (method) {
var hideablearea = document.getElementById("hideablearea");
var hideablearea2 = document.getElementById("hideablearea2");
var hideablearea3 = document.getElementById("hideablearea3");
switch (method) {
case "1":
hideablearea.style.display = 'block';
hideablearea2.style.display = 'none';
hideablearea3.style.display = 'none';
break;
case "2":
hideablearea.style.display = "none";
hideablearea2.style.display = "block";
hideablearea3.style.display = "block";
break;
case "3":
hideablearea.style.display = "block";
hideablearea2.style.display = "block";
hideablearea3.style.display = "block";
break;
default:
hideablearea.style.display = "none";
hideablearea2.style.display = "none";
hideablearea3.style.display = "none";
}}
I know how to use javascript to validate that the forms are infact filled but how do I make it so that it doesn't scan the hidden forms. The only way I could think of would be a huge bunch of if statements. Is there any other way to do this?
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Nov 13, 2010
I have a database that shows about 5 to 10 recorrds on a page that contain forms for the user to fill out. The number of rows is unknown and depends on the user query.On the page there can be 2 or 10 records displayed ..each containing a form that needs to be validated.How can i use that. The IDs of the elements would have to be generated dynamicly i suppose. Anyone of you got an idea how to do that ?
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Oct 11, 2007
I know that this must be quite trivial to most of you, but my skills
in JavaScript are weak.
I am looking for a way to validate all forms throughout a website
through one validation script.
How do I determine the form's name (or id) value to implement
conditional validation?
i.e. if (form1) { validate like this }; if (form2) { validate like
this };
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Jul 5, 2010
I'm currently working on a website called 'eXtreme Gaming' I've almost completed it, apart from two things.
- Adding two values on my checkout page for the Grandtotal (I've tried everything, but I'm too much of a noob and have probably missed something small).
- Validation of forms (I don't know where to start here, I've looked on w3schools for tuts etc but I'm having difficulty incorporating it on my site)
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Jul 9, 2009
I have a php page with java script embed in it, i have 3 forms in a single page ... namely form1, form2, form3 . form 1 and form2 have a text box , these text boxes get input from users. Now my task is to get the value of these 2 tex boxes in form3 when the user click the submit button, so that i pass the values in those text boxes to next page for calculation.
I tried the following code in form3 but it result in vain :
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Mar 29, 2010
Filename: summary.htm
Supporting files: back.jpg, edge.jpg, links.jpg, logo.jpg, summary.css
-->
Code:
<title>Conference Summary Page</title>
<link href="summary.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
var searchString = location.search.slice(1);
var formString = searchString.replace(/+/g, " ");
var dataString = unescape(formString);
data = dataString.split(/[&=]/g);
</script>
</head>
<body>
<div id="links"><img src="links.jpg" alt="" /></div>
<div id="head"><img src="logo.jpg" alt="CGIP Annual Conference" /></div>
<div id="edge"><img src="edge.jpg" alt="" /></div>
<div id="main">
<p id="intro"><b>10th Annual Conference of Computer Graphics and Image Processing</b><br />
University of Colorado, Boulder<br />
March 3 - March 7<br />
Conference Fee: $145
</p>
<table id="summary"> .....
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Oct 28, 2010
I know that Javascript is client side, but I'd like to know the best way to populate HTML drop downs in real time based on information typed in the other HTML form fields with information found on the server as opposed to the client.For instance if a user wants to select certain files located in a directory on the server, as they type in the pathname supposedly containing the files the drop downs continually refresh themselves with the server files listed in that directory (if it exists, and apache has permissions to see what's inside) as if it was showing client files instead.
What would be nice is if my browser could continually query the server for some of its private information and not have to refresh itself to obtain it, whether that means the server-side would have to continually refresh itself makes no difference to me as long as the client-side doesn't have to. But I guess this is not possible because no matter what you would have to at least refresh the client-side page once?Submitting the form to a CGI or PHP script would not work because I need this functionality to help populate the form BEFORE I send it.I would like to not have to press a button to update the form every time I change the pathname and need to update the drop downs since this would be annoying.
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May 4, 2009
I am new to javascript, I have one question, how can I use javascript to get the IP address of the remote user or remote web browser?
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Feb 6, 2009
I'm looking for a tutorial type of help on using JQuery to create/populate a selection list. I've looked at their site (and searched on their site/google) and although there is tons of stuff there, I can't find what I need.
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Nov 29, 2010
Sorry but I can't get the very first tutorial to work. I put the custom.js in a test_jr directory in htdocs. I also put the starterkit.html file in the same directory. I copied the contents of jquery-1.4.4.min.js into a jquery.js file also in the same directory. Then I did the custom.js page shown here:
<html>
<head>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$("a").click(function() {
[Code]...
I tried clicking on the [URL] and I get the starterkit.html page. If I click on the "some link" it doesn't do anything. What am I missing? There are syntax errors in my editor starting on the line with the asterisks* Why is there an error there? It looks like it closes the click function?
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Sep 16, 2010
I want to make few forms but 1 submit button. I want to do 1 page , 5 forms , 1 submit button so when i click on the submit button it will send the 5 forms as 1 form.
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Mar 26, 2011
Link me to a good guide or tutorial for prototypes?
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May 5, 2006
I'm thinking about developing a Google Maps style project for the university I work at. What I'd like to do is have a graphical image of our campus we currently use, but use AJAX to allow people to select a building and have the map dynamically move and point out the location.
The map is quite big so I was thinking of having it like Google Maps where you can drag the map through an iframe without having the page reload.
Does anyone know of some good tutorials on how to do this? While our campus is relatively large, it's not large enough to just use Google Maps instead of developing our own.
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