Validate That Numbers Are Entered

Oct 30, 2001

I'm trying to make sure that when a user enters information into my textbox, that when the textbox loses focus then it checks to make sure that they entered numbers and not text or other characters. Numbers only....Any suggestions?

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Check Numbers Entered

Jul 23, 2005

I am constructing an HTML questionnaire and one of the questions
requires people to rate some choices from 1 to 5, where 1 is their
favourite and 5 is their least favourite:

Car
Bus
Taxi cab
Train
Airplane

Each choice has an INPUT TYPE=TEXT tag to contain the response. I
also have a function that is called ONCHANGE in order to check that a
number is entered between 1 and 5:

function CheckNos(obj) {
if(obj.value.match(/[^d]/) || obj.value<1 || obj.value>5)
{alert("Please enter a number between 1 and 5");obj.value="";return
false}
}

This works fine, but ideally I would like a function that could check
ONCHANGE that someone has not filled in the same number twice, for
example answered "1" for all of them. They are only allowed to use
each rating number once, so rating their choice 1 to 5.

Can anyone suggest a short function that could accomplish this easily?
Could I use some kind of array with 5 elements and allocate a flag
value once that number had been chosen, then check that the value had
been set?

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Adding Numbers That Have Been Entered In A Form

Aug 25, 2011

I have the following code that I wrote myself (except for the function isNumberKey). However, I don't know how to actually add the numbers together. My plan is to store the value entered in the forms as a variable, then manipulate the variables to get my final number. The final number would be stored in variable named Total and would be displayed after Total: at the bottom of my page.

<HTML>

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Form Validation - Check That Only Numbers Entered

Mar 19, 2010

I am using this code to validate a form to check that only numbers have been entered but when I enter alphabets the javascript raises an error but still submits the form.

<script type='text/javascript'>
function isNumeric(elem, helperMsg){
var numericExpression = /^[0-9]+$/;
if(elem.value.match(numericExpression)){
return true;
}else{
alert(helperMsg);
elem.focus();
return false;
}}
</script>
<form>
Numbers Only: <input type='text' id='numbers' action= "desktop.html"/>
<input type='button'
onclick="isNumeric(document.getElementById('numbers'), 'Numbers Only Please')"
value='Check Field' />
</form>

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JQuery :: Can Validate And Update Entered Value Before Doing Search?

May 14, 2009

When typing data into the autocomplete-field the list of matches is updated at every key pressed.Is it possible in any way to check and correct the data before doing the match. Or could you alter the way the match is done.The perfect example is when you have lots of users entering decimal values into a filed. Some people uses comma and some decimal-point. So you would like to permit both "2.23" and 2,23" to be matched against 2.23 in the list.[code]

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Jan 4, 2010

I have a page with textarea where user can enter html code for link exchange

I need to verify whether the code entered contains url in anchor's href tag having same url as that of reciprocal link. how can i do this?

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Validate Three Textboxes And It Will Validate For Numbers?

Feb 19, 2010

I need to validate three textboxes and it will validate for numbers. How should I change my code to validate three textboxes?

<!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" >

[code]....

I need to use Javascript to validate 3 textboxes, whereby the users can only key in numbers (because they are phone numbers related fields). If any of the textbox is empty, display an alert message to show which textbox is empty. I do not want to show many alert messages to show that, for example, text1 and text2 are empty, it will show two alert messages. I would need to show one "summarized" alert message instead.

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JQuery :: Validate Optional Fields Only When Data Is Entered?

Oct 13, 2010

I'm using jQuery validation on a form and I can't get it to only validate optional fields if the user enters something (should recognize the difference between this and the default value of the field, for text input fields). I know this is built in (I think) but I must be doing something wrong.

For example, phone number is optional but I want it to validate if the user enters something. Code for the phone in the JS file is:

jQuery.validator.addMethod("phone", function(phone_number, element) {
phone_number = phone_number.replace(/s+/g, "");
return this.optional(element) || phone_number.length > 9 &&
phone_number.match(/^(1-?)?(([2-9]d{2})|[2-9]d{2})-?[2-9]d{2}-?d{4}$/);

[Code]....

When I just put "phone" as the class it validates the field even if it is not edited by the user at all. For the required fields I put "required" as the class to validate them but I just read in another post that this is not necessary with the plugin...? I guess I am not sure whether the field should be define as optional by a class or in the JS file, and if it's the latter, how to do that.

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Validate That User Has Entered A Ten Digit Number Into The Text Box?

Mar 18, 2011

I need to validate that the the user has entered a ten digit number into the text box, and need some help with the code. Here is what I have:

<html>
<head>
<title>Checking with RegExp</title>
</head>

[Code].....

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Validate Numbers In A Generic Way?

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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How To Validate Letters Or Numbers Only For Inputs

Feb 26, 2010

I have this java script code in my php file wherein I used this as my validator..for the inputs in different fields in my textbox. How to create a validation that only accepts letters... in my first name and last name field. I also wanted to know how about accepting numbers only in my field.

Here's the code:
<script type='text/javascript'>
validation and submit handling
$(document).ready(function(){
$('#employee_form').validate({
submitHandler:function(form){
$(form).ajaxSubmit({
success:function(response){
tb_remove();
post_person_form_submit(response);
},
dataType:'json'
}); .....

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May 27, 2011

This is an assignment I have for a course I am taking. The objective is to validate the zipcode of a form to ensure that it only contains numbers. I cannot get this to work. The teacher wants us to use the for loop to do this, otherwise I would use a different function.
Code:
<!DOCTYPE html>
<html lang="en">
<meta charset="utf-8">
<head> .....

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Validate Tex Boxes And Check For Numbers?

Nov 24, 2009

I was wondering if it is possible to validate tex boxes and check for numbers etc..

Take a look at this page:-[URL]... I want to validate the "Average annual income" and "Holiday entitlement" fields.

The salary field should be no bigger than 1000000 and should display to two deciaml places, and the holiday field should be no bigger than 99.9..

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JQuery :: Validate At Least One Phone Number & Numbers Themselves?

Feb 11, 2010

have a form with three fields for home phone, work phone & mobile phone.I've got jquery to validate that the numbers entered are the right format, i.e. using the following with custom methods for the phoneUK etc.The thing is I only need one of these numbers. I have been trying *all day* to try and get this to work but no joy. I know I need to group them somehow but can't figure it out.I want it so I get a single message if all fields are left empty and then if a field does have an entry then it's validated to ensure its a number.

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Jul 25, 2009

i have got this great bit of code tha allows only numbers to be typed in the text box, how ddo i adjust this code to allow a . as well as the numbers.

[Code]....

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JQuery :: Validate A Text Input To Not Accept Numbers

Aug 7, 2009

I have searched the internet and couldn't find a problem regarding this issue. The thing I want to do is simply validate a text input so when you enter a number in it, it won't validate and give you an error message. This is the code:

[Code]...

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Validate Numbers Only And Email Format In Contact Form?

Aug 18, 2011

i using for my contact form

[URL]

The above code was copied from a Youtube tutorial about JavaScript.

I would like to ask, what additional code should be added in the existing code in order to validate the numbers only and an email format before the form to be submitted?

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Regular Expression :: Validate Numbers Separated By Period (.)

Dec 19, 2005

I need a regular expression to validate a string which consists of numbers, seprated by a period. For example: 123.456.7890.123 or

543245634.564362454.543543523.43532543

Basically, its a set of any amount of numbers, seperated by a period, ocurring any number of times. Now this is my first time dealving into regular expressions, and after reading some tutorials i came up with this:

/+((+d).)/

Would this evaluate correctly?

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Phone Number Form - Error-check It So That Only Numbers Can Be Entered Into The Phone Number Input Field?

Sep 26, 2011

I am working on a Phone Number Form. The link of script: [url]

Questions:

(1)I wanted to know if code this script so that instead of the phone number appearing as: (123)456-7890

So that it appears as: (123) 456-7890 with a blank space after the ")"

(2)If that's simple, is there a way to error-check it so that only numbers can be entered into the phone number input field?

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Regular Expression :: Validate Numbers Separated By "-"

Oct 17, 2007

I need a regular expression that validate a list of numbers separated by "-" , numbers can not be greater than 999

Valid examples:

0
12-455-01
1-9
125-32-155-45-45

Invalid examples
-1
45-
1-45665456-4
12-45-
-

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Include Numbers And Alphabets Instead Of Numbers Only?

Apr 7, 2009

I need to modify the script showed at: [URL]

Right now it allows entering "numbers only", I need it so that it allows numbers and alphabets only, no special characters or spaces.

And yes, one more question, does the first part of the code need to be added in the <head> of the document or <body> ?

The code at the above URL is as follows:

<script type="text/javascript">
// initialise variable to save cc input string
var cc_number_saved = "";
</script>

[Code].....

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Jun 3, 2011

I'm using the validation plugin [url]

I must be missing something, is there not an easy way to validate inline?

For example, I have a required text input that is given focus on page load, I would like for it to throw an error if the user moves to the next field w/o entering any data.

Right now, it only checks for errors on 'submit'.

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Sep 16, 2009

im loading data via json dynamical from the server. Now i try to optimate the speed of my application and so i want to disable the validate of the fields during the data loading from the server.Is there a simple solution to this? like validate = false

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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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Jquery :: Validate Input Array Form With .validate.min.js?

Nov 9, 2011

How can i validate x inputs with name array like init_date[] with this plugin [URL]

$('#form').validate({
rules: {
year:{required:true,number:true},

[code]...

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JQuery :: Validate Plugin Change After Call To Validate?

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I'm working under certain constraints wherein,at a certain point outside my direct control,validate is called with no arguments, but after that I want to set a custom validation function on a form field. I figure there's got to be a way to manipulate validate's internal data structure to add the function, but I don't have a clue as to how.

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