Generic Form Validation Script
Aug 24, 2006
I am looking for a generic form validation script for my personal
project. I found few out there in search but nothing too close to what I want.
If I have a form in a page I want to call the javascript valdiation
routine and display all elements error messages in one validation to
their parentNode.
I found few routines which displays error message in alerts and that
too validation for one element at a time.
Can any one point me to open source generic form validations.
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Jul 20, 2005
I'm trying to write a generic/reusable form validator in Javascript...
just something that checks to make sure required fields have a value. By
generic I mean I don't want to explicitly reference the name/id of the
form or the name of any of the data fields within a "validation"
function.
My first shot seems to have some errors in it:
FieldsToValidateByForm = {};
FieldsToValidateByForm['contact'] = ["FirstName",
"LastName","State","Email"];
function validate(form)
{
problemFields = new Array();
returnval = true;
FieldsToValidate = FieldsToValidateByForm[form.id];
for(i=0; i < FieldsToValidate.length; i++) {
fieldInQuestion = form[FieldsToValidate[i]];
if(fieldInQuestion.value.length < 1) //problem spot?
problemFields.push(FieldsToValidate[i]);
}
if(problemFields.length > 0) {
returnval = false;
warn(problemFields); /* tells user they're missing a field,
that's all */
}
return returnval;
}
What I think is happening (not sure) is that the expression
form[fieldsToValidate[i]] is not giving me what I want: a reference to
the object corresponding to the form field with the same name. In
otherwords, I must have some fundamental misunderstanding of how the DOM
works here. Unfortunately, I can't seem to find a good enough reference
to set me straight....
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Oct 2, 2009
I have a form with multiple fieldsets which are visible conditionally. There are three submit buttons "Abandon", "Save" and "Save & Continue". Each button should validate specific controls of the form and submit it. I tried setting "onsubmit: false" and checking for "$('#myForm').valid ()" on click of these buttons., but that validates all controls of the form.
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Apr 1, 2011
I am trying to display validation error messages when form validation fails. Currently it does display the error messages but then disappears straight away. How can I stop the page from refreshing when validation fails? I have return false in my code when validation fails but still having same problem. Currently I have only done the validation for the full name only. The error msg is showed in:
[Code]...
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Jun 21, 2009
This is in regards to Jrn Zaefferer's plug in.How do you customize input validation so that I can remove foullanguage?So that first name or last name doesn't have "fck you" or something
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Jul 19, 2009
I'm using the Validation plugin for JQuery and was wondering if there was a function to submit the form without causing it to validate the form. I have a table with a list of radio-buttons and above that is a drop down list of states. The drop down list of states is used to filter the table rows and when the selected item changes it posts-back to the server (via $("#frm").submit()). I don't want this to cause any validation to occur. Is there another function I can call besides submit(), or some other method?
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Dec 21, 2009
I need to validate two forms containing multiple input fields but want just one error message if any of the fields are left blank, the page is required to submit the users details (registration form). Also if any of these fields are left blank i don't want to be able to go to the next page on clicking the submit button
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Apr 9, 2010
In my form, i have around 20 textbox. I want to validate all the textbox. It should accept numbers and decimals. I have the following code...
How can i make the call generic to all the textbox?
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Feb 21, 2010
I have my website www.gebcn.com. If you view source you will see all that I have done, but more importantly my problem. I have the JS code at the top there and I am unable to W3C validate my HTML because of the JS. I am using XHTML strict and would like to stay using it.
The JS I have at the top is my form validation code. I am able to do any validating that I need with this "snippet" of code, I have shrank it from my library version just to use for this newsletter. Until now W3C validating was not important now for some reason it is and I am faced with this problem.
I am not a Javascript guy more of a HTML/CSS guy and I can manipulate JS to suit my needs.
<problem> I have tried to make this "snippet" of JS code an external file but receive multiple errors with the JS calling for the FORM NAME as it is not on the same page. The form NAME=NEWSLETTER is another problem, as W3C says I am unable to use attribute "NAME" in this location. <problem> I would like to keep the JS close to how it is now as I have a library to use this JS over and over again.
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May 3, 2006
I have 40 or 50 inputs scattered among many pages that all need the
ability to open a popup which allows the user to navigate a file
directory structure, locate a specific file, and return the fully
qualified file name to the parent window input. All the 40 or 50 inputs
have unique IDs. Given any one input ID, I have everything working
perfectly: the parent form opens the popup using
window.open("FileFinder.aspx?dir=" + UserRootDirectory + "&InPutID=" +
IdCodeInOnClick);
Popup talks back to parent using window.opener.document...
Like I said, give me the input field ID and I can make everything work
every time... but it makes NO sense to write 40 or 50 functions, one
for each unique input field. I tried using
window.opener.document.forms[0].getElementByID(InPutID).value
but I keep getting an error message about something requiring an
object. Is there a way to accomplish this? Also, since I'm new to
JavaScript (and web programming generally), is there a good tool for
debugging JavaScript intended for IE?
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Sep 3, 2011
I'm trying to extract a value from an attribute, namely listid in this case, inside an input tag.code...
$list is an associative array fetched from a database. The contents of that array might be irrelevant for the issue. I'm using a jQuery to handle any javascript code. How do I extract $list['id'] from this input tag?
or is there another genius way to accomplish the same other than using an input tag?
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Dec 5, 2005
<disclaimer>js newbie</disclaimer>
My page has a form comprised of several radio buttons. I want to poll the
buttons to determine which button was selected and convert its value to a
string. I then want to use the string on the same page. Code:
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Nov 9, 2009
ok i have a script which will make a copy of the html in a div and place it into another div the problem with this it creates a duplicate element with the same id so what i want to know is can i create a new id based off old ids using a generic type script
function scope(e)
{
var popin = document.getElementById('popin');
[code]....
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Jul 23, 2005
I want to write a generic clearForm function to clear the form when
the user click CLEAR button.
Here's my attempts, because I want to take care all html controls. I
think I need to test if the control is submit button, regular button. But I don't know
what I should do on drop down box?
function clearForm()
{var i=0;
for (i=0; i<InputForm.elements.length-1; i++)
{var obj = InputForm.elements[i];
document.write(obj.type); //runtime error: object doesn't support
this property or method
if (obj.type != "submit" && obj.type != "button")
obj.value = "";
}}
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Jan 8, 2007
I want to learn more about creating functions for element events
without having to put onclick event in every tag. For example:
<script>
document.getElementsByTagName('input').onclick = function () {
alert('hello');
}
</script>
Now, I know the above does not work as I have tried it but hopefully
the idea of what I am trying to achieve here. Basically for every input
tag, when the user triggers the event (click) it will do the same
function.
Anyway, I would more so like to learn about this type of scripting
where you assign functions to events. However, I dont know what to
search for in google and the like. Where could I learn more about this?
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Jan 5, 2012
I have quite a few calls on my page at different points to populate dropdowns using jSon responses from the server. It is all working fine now apart from one issue. The name of the field that sets the value and text of the new Option(s) being put into the dropdown.
[Code]...
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Jan 19, 2006
Is it possible to have a generic script that set the input focus on the first valid element in a document (not hidden or disabled) ?
This script is at the end of a document, but don't work.
<script type="text/javascript">
document.forms[0].elements[0].focus();
</script>
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Aug 13, 2011
Having a few problems with a form validation script. Its supposed to stop sending the form if key fields are missing, but it just sends them anyway!
Below is the code i use in the header to check for blank fields:
Code:
And now the code i use to action it:
Code:
From what i can see the fields match, it all links up correctly but still it will allow blank forms to be sent.
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Nov 2, 2011
I'm having trouble changing the font color of my labels ONLY when I stop the form from submitting due to blank fields. I'm not sure whether if just changing my CSS will achieve what I want, or am I going to have to add somethig to my if else statement, or both? I would think I would need to change CSS to :
label.onfocus {
color:red;
}
but a little confused on what else.
<?xml version="1.0" encoding="UTF-8"?>
<!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" xml:lang="en" lang="en">
<head>
[Code]...
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Sep 1, 2009
I have a working contact form with 3 of the fields requiring validation and they work well. I have added extra fields to the form (StatusClass, Project, CameFrom). These 3 fields return fine but I need to validated them. My problem is that the new fields don't show in the behaviours/validate panel even though they are within the form tag.
<script type="text/JavaScript">
<!--
function MM_findObj(n, d) { //v4.01
var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
[Code]...
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Apr 26, 2010
I currently have a form named "survey". I found here a JavaScript to validate my form.
I am having serious issues with this script, either it won't execute at all (the form doesn't work, as well as the validation) or the form submits without validating the form.
Here is the current JavaScript I am using.
In the head section
Code:
Code:
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Feb 13, 2011
I've literally tried everything. Read 26 tutorials, interchanged code, etc. My validation functions all work. My AJAX functions work (tested manually using servlet URL's). The second servlet validates the reCaptcha form that's generated on my webpage. After the form is validated, even if everything's correct, nothing happens upon clicking submit. I even have an alert pop up if with the captcha result, just for middle-layer debugging purposes.
I want to do all of my validation clientside; none serverside. However, going to be tough if I can't get my god damn form to submit. I've been puzzled by this for close to 36 hours straight. I can't see, and I'm going to get some rest and hope that there is some useful insight on my problem when I return.
[Code]...
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Sep 24, 2009
I've set up a mock registration form page so I can learn a bit about javascript's form validation. (newbie) I want to try to attempt to style the border of a form field green when the user enters the correct info into the form text field and red on all other fields if the user doesnt enter any info into them. When i test it, enter the right info into the username field, leave the others blank, and hit the submit button it styles the username field green ok but it doesnt make the next fields (password and so on) red. just for testing purposes I've put return false on everything so it displays a message when everythings ok.[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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Sep 3, 2009
I have created my second Form to File Web Form but basically I took my First Web Form coding (with the Java Script) and manipulated it so that it suited my needs for my 2nd Form (both are very close to being the same).For some reason, I can't get my Java Script validation to take effect. I was wondering if some one could try to pin point why it isn't functioning properly? Again it could be the most obvious thing, but please bear with me as I learn.Just for a little more clarity, I am going to list the things that I have changed to possibly make it easier to pin point:[code]
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Jul 23, 2005
I have a web form with several fields. If I copy & paste from a RTF document into a field, the javascript validation and field length are bypassed and cause the form to fail.
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