Validate Field If Something Is In It?
Aug 24, 2010
I am trying to write some Javascript to validate a certain field. I have it working but I want to make it only validate if there is something in that field. I've looked at different tutorials online but I can't seem to get it to work. This is what I have so far:
if((form.fieldname.value.length < 5))
{alert("Field must have at least 5 characters!");
return false;
}
I don't want this statement to run unless there is something entered into the field.
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Aug 20, 2010
I have a form (form1) to register with the fields: user, email, password being validated normally.
Have a second form (Form2) to the user update the data registered in form1, and the fields user, email, password is already populated with data from the database, the email field I use the remote validation, and as the field already has been completed and read always says that this email already exists, how do I create a rule or method so that when the field is already filled it not do so validating and validate if it is filled with a new email. Email2 have a hidden field in order to do a test type.
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Feb 9, 2011
that a javascript which is validating a phone number accepts only digits but if the text field is left empty it should accept the entry as an empty entry...
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Nov 19, 2010
I have a credit card field that is only mandatory if they select a credit card as a payment type.
If they select Gift Certificate, then I set the card to not be mandatory:
$('#creditcard').removeClass('required').removeClass('creditcard');
validationRules.rules.CardNumber.required = false;
however the validation still fails on the creditcard field. If I enter this in to Firefox's console:
$("#OForm").validate().element("#creditcard");
it returns false.
To make matters more confusing, this validation only fails on my form when I am passing a particular parameter in the URL string. I've scoured my code and cannot figure out why that parameter would have any impact whatsoever on this matter.
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May 1, 2010
I am new in jquery and learning it.I am going to make a form validation where if the radio button is checked then the form validation will take place in particular one field ie file field and all other fields will be validated normally. Here is my code:
[Code]....
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Jul 4, 2009
I am trying to validate a name field for a form I am doing. I am trying to do something that says the user can enter two or more alphabetical characters (which I can do) then they could have a hyphen or space followed by more characters if needed.
So far I have the following code from following examples in the "Working with strings chapter of the book". The code will validate if the user has two or more alphabetical characters but I cant get it to work if I then put in a hyphen.
Code:
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Dec 8, 2006
I have a form field that is for a url.
I have the value of the field http:// so that the users can add in www.site.com
How do I validate:
1) there is a website entered
2) that it begins with http:// (in case they tabbed and deleted this part and only have www.site.com or just site.com)
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Jan 29, 2009
In javascript - is it possible to validate a field which could have several different values... such as:
"1BVF"
"9IUJ"
"QW-9"
I have googled - but can only seem to find single validations, so was wondering if I am barking up the wrong tree.
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May 29, 2007
I need to validate three image fields with javascript so the user cant upload anything else expect files with image extensions.A i also need to control the size of the image, for example to restrict user uploading files with greater size than 1MB.
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Jul 23, 2005
Is it possible to make a textarea required only if a certain value is selected from a <select>?
I am trying to make a textarea named ObjOther required only if the value OT is selected from a drop down list named Dmost. Is this possible to do client side using javascript or do I need to look into trying this in another language?
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Jan 27, 2010
I have a JS which validates the correct format for postcodes (or zip) on an html form - works fine.But what I want to do is to use a JS to see if a website visitor is eligible for a particular service on their postcode / zip - ie the first general part on the code. For example if they type L15****, or L16**** or L18 (where the asterisk could be anything) it pops up the alert box with a message saying "Yes eligible" but any other code returns "No sorry not eligible" - eg L19**** it returns nope.I've tried hacking the code that validates to format and can manage it for just the first character - ie the L but I'm totally lost after that. I don't know if hacking the below will work.
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Sep 28, 2011
I wonder if anyone can assist me here. I am trying to find the best way to validate a field against another field. In this case I need to make sure when the user enters the date of birth that the date is not prior to another date in the database (admission date). I would like to do the validation on submit before the other data from the field is submitted to the database.
I have seen a lot of forms validation that can compare the inputted value to a range of values, but I need to say "is the birth date prior to the admission date? If NO then give a message to the user to recheck the date". Sounds easy, but I haven't found a clean way to do it.
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Dec 4, 2010
[ICODE]
<html>
<head>
[code].....
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Feb 10, 2011
I have an expression validating email addresses but it seems there is a loophole. If a user enters a comma this is accepted. how i can modify the following to disallow commas?
validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;
strEmail = document.form1.df_email1.value;
if (strEmail.search(validRegExp) == -1) {
[code].....
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Jul 19, 2011
Using jQuery Validate to do it's job of validating a form. Problem is I need to get at least one phone number recorded in the form - either a Telephone or Mobile (Cell).Is there any inbuilt way of setting up the rules to do this?I have seen the Milk demo for the validate plugin where there's something similar, but the 'name' attribute is the same, something that's not going to be the same for two different text inputs.
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Aug 28, 2009
I have a form where I am using the jquery validation plugin. In that form, I have a date field that is using a jquery datepicker plugin so a small calendar gif immediately follows the date field. The date is required. The problem is when the field fails validation, the error
message appears directly after the date input pushing the calendar gif to the right of the error message. I know there is an errorPlacement parameter that you can use, but isn't that for every field in the form? How can I get the error placement to go after the calendar gif
just for the date field. Here is my test code. I am also using an AJAX form submission plugin. The name of my date field is startDate.
$("#myForm").validate({
submitHandler: function(form) {
$('#myForm').ajaxSubmit(function(){
alert('SUCCESS');
});
}});
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Sep 22, 2010
Im trying to validate an email field dynamically using jquery.validatehere.The field i'm speaking about is "Email" ("Registro" form).
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Dec 1, 2010
Has anybody found a way, using the jquery,validate.js plugin, to change the error place of one field?
I can change the error placement for everything, or consistently for all the fields, but I have 2 fields that I want to place the errors someplace else. Is there a way to do that?
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Jan 18, 2010
here is my current email validation code:
function validateEmail(strValue) {
var objRegExp = /(^[a-z]([a-z_.]*)@([a-z_.]*)([.][a-z]{3})$)|(^[a-z]([a-z_.]*)@([a-z_.]*)(.[a-z]{3})(.[a-z]{2})*$)/i;
return objRegExp.test(strValue);
}
what should i add to reject email addresses from hotmail.com and yahoo.com?
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Mar 23, 2010
I have a text field where a user can enter either a(n):American zip code (example: "02475")Canadian zip code (example: "A3F 4G6")A "city/state abbreviation" combination (example: "Toronto, ON", or "Las Vegas, NV")For the most part, users don't have much of a problem with the first two criteria, but some people have some trouble with the third, either by entering simply a state ("NB", or "Texas"), a city, or spelling out the state name "Chicago, Illinois". I need to put together some validation that makes sure that:
If the entered text is not an american or canadian zip code (IOW, if the entered text contains no numbers at all - in that case, move on to the next validation check)Check to see if the third to last character is non alphanumeric (if they entered the city/state combination correctly, there would be some sort of non-alphanumeric separator between the city and state abbreviation)if the entered text doesn't fit the criteria, return the error.
function hasNumbers(string) {
var regex = /d/g;
return regex.test(string);
}
[code]....
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Feb 5, 2010
How can I validate a text field to make sure it contains only digits?
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Sep 7, 2009
I've been building up my validation using the jquery validation plugin but I can't work out how to get a failed validation to default the focus to the first invalid input rather than to the last selected input. If there is no input field selected, when I submit then a failed validation will focus the cursor on the first field but if the cursor was left in a field and submitted then the focus stays there (if it's invalid) rather than jump to the first invalid input. From what I've read and seen, this is the expected behaviour but not what I want. Is there a way I can get the first invalid field and set the focus to that?
[Code]...
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Oct 26, 2010
I'm trying to set up a form that has a text field that is required to be blank - I'm dealing with form spam, and the bots are stuffing every text field with random crap. So, I have a text box that is required to be blank. But I can't get jquery.validate to understand both required and blank.the text input is has a name and id of live_check.I have added this method:
$.validator.addMethod("equalToParam", function(value, element, param) {return value == param;});
and then my rules look like this:
rules: {
first_name: "required",
last_name: "required",[code]...
But validate flags the empty text box as invalid (because it's required?)
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Nov 2, 2011
Run the following on a select field but only works when I remove the multiple="multiple"
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Mar 30, 2011
How to validate an input field for a set group of zip codes. Basically I have a list of about 200 zip codes that are valid for this project I'm working on. I tried using the range method and wasn't able to get it to do what I needed it to do. I don't want anyone else to see what the list of correct zip codes are, this is to verify that they are local.
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Jan 14, 2011
I have written a form in HTML which contains username,lastname,email,password and submit.I have written a javascript to validate this form [validate(username,lastname,,password)].On submit this javascript function will be called and hence form get validated. I am passing all the arguements(username,lastname,email and password) to the javascript function..Is it possible to make me a code such that it should call an individual function for each field in the form.for ex:if i have not entered username, last name in the form and attempt to submit, only username arguement should be passed to the function as it comes first in the form.In other sense i want to validate individual text field validation of my form.
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