Form Field To Check For A Leap Year?
May 3, 2010
A non leap year can be divided by 100. But a leap year is divisible by both 4 and 400.This seems so simple yet I can't nail it. I'm taking an accelerated Javascript class and I was able to do all the problems up to this one. It's confusing me, or it may be that I've been up since 2 working on homework and getting ready for another test.
Code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
[code]....
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Jun 8, 2007
I have dropdown for month and work days(in a month),textbox for year(yyyy).
I need to validate, if user select febraury and select other than 28 ( for non leap year), and select other than 29 ( for leap year) user should get error message.
same validations should be done for other months also.I need in Javascript or C#(VS2005)
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Jan 7, 2012
If you see my last post, it was a piece of this code that I was learning for/loops but now I have that all working(hence the new topic) and I'm having a problem with indexOf. Here's the whole script(its a fun little date picker)
function popSel(v){
var days;
var x;
if(v==01 || v==03 || v==05 || v==07 || v==08 || v==10 || v==12){
x = 31;
}else if(v==04 || v==06 || v==09 || v==12){
x = 30;
}else if(v==02){
/*var yr=document.getElementById("year").value / 4;*/
var yr = 2003 / 4;
if(yr.indexOf(".") == -1){ /*If you divide a year by 4 and the value is a whole number, it's a leap year*/
x=28;
}else{
x=29;
}}for(i = 1; i <= x; i++){
days += "<option value=" + i + ">" + i + "</option>";
}document.getElementById("day").innerHTML=days;
}
The whole script works but feb doesn't change?
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Jan 5, 2011
having a problem with my javascript and I am not getting any errors :(
<script type="text/javascript">
//function disable()
//{
//document.book.day.disbaled="true";
//}
function enableOption()
{
[Code]...
I want the thing to check the year and month for matches and then populate the day all using drop down boxes.
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Aug 4, 2007
I have an image validation script that im working on. This is what i have so far...
<script type="text/javascript">
<!--
function validate_form ( )
{
var imgcheck;
valid = true;
if ( document.editavatar.avatar.value == "" )
{
alert ( "Please Enter an Image Url!" );
valid = false;
}
return valid;
}
//-->
</script>
How can i add to that so that it checks if the avatar field has the words png, jpg, gif and bmp, and if it doesnt, valid will be false. So in other words, if it does contain png, jpg etc it will return valid.
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Aug 18, 2010
I have some problems with validating form in javascript.
I have a following HTML code:
What I want in validation is to check all the field in form (check for required fields etc). I want to show user error message in div tag with id='poruka'.
Part of code of function ValidirajFormu:
So, validation works OK, but message is not written in div tag. Only if all fields are correct, form is submited, but there are no error message.
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Sep 5, 2007
I want to validate a form. In the form is a text field named 'extra[]' where the user inputs a number. The number is what I want to validate.
However, the 'extra[]' field is dynamic and does not always appear in the form.
If it appears, there may be only 1 occurrence of it which means it's then not an array but there may also be multiple occurrences of it.
I have a script that validates (and work as it should) if the 'extra[]' field occurs multiple times and is thereby an array, but I can't figure out how to validate the 'extra[]' if there is only 1 and to not throw an error if it's not there at all. Code:
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Jan 26, 2010
How can i check if file form field has file selected or is empty?[code]...
is this ok or is there a better way?
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Aug 11, 2011
Is there any way to use jquery.validate to check if any field from the form contain HTML injections?
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May 25, 2010
I have a form with a text field and a submit button. I don't want the form to submit if the text field is filled in correctly. for example a email address typed in the text field area. I'm working with spry validation but i guess i need to add some kind of onSubmit event, with javascript. I have some idea but not sure what to fill in by the "if statements" in the script.
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Nov 15, 2005
I'm having users fill out a form where there are multiple rows of data.
Some of the rows can have duplicate data for some fields.
So say on line 1) i have first name, last name as an input fields and some other fields as well, c, d, e, etc.
When the user gets to line 2) if they want to have the same first name and last name as line 2, can I have them check a box and it will automatically populate these fields with the info they just typed in line 1? I can't figure out how to do this.
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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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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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Jun 19, 2006
I'm really sorry to post this as I know it must have been asked
countless times before, but I can't find an answer anywhere.
Does anyone have a snippet of JavaScript code I could borrow which
calculated the difference in years and days between two dates, and
takes leap years into account?
I'm calculating the difference in the usual way, i.e....
var difference = dateTo.getTime() - dateFrom.getTime();
....and converting this millisecond value into days by using...
var daysDifference = (difference/1000/60/60/24);
But how do I then display the difference in days AND years? I've tried
the following:
var yearsDifference = Math.floor(daysDifference/365.25);
var daysLeft = Math.floor(daysDifference-(yearsDifference*365.25));
....but it gives me inaccuracies. For example, if I use my code to
calculate the difference between 05/01/1998 and 05/01/2000 it returns 1
year and 364 days!
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Apr 7, 2009
How do you think I should go about making February have a 29th day to choose from on leap years only? Years that are multiples of 4 that is...
Code:
init();
function init(){
[code]....
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Jul 18, 2009
I have an .asp page for my customers which does just accepts e-mail information and passes this information to another .asp page. But before passing the info, a javascript checks whether the entered e-mail does match some certain rules. Rule1: If any input has been made at all, Rule2: If an "@" sign is there, if the"." is there and so on. upon pressing the submit button, the first rule works but the second rule does not. Could not figure it out why.
[Code]...
It is the function control() which validates the e-mail field. But it just validates whether the e-mail has been entered or not. The second check (with the @ sign) is not being made.
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Nov 12, 2011
i think this will help people a lot, cuz i couldn't find any simple answer by googling 3 hours...i need a very very simple jquery form field reset.here is the picture what i need:
HTML Code:
<script type='text/javascript' src='http://code.jquery.com/jquery-1.6.4.min.js'></script>
<script>
[code]....
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Aug 4, 2006
I'm having some problem with checking with the follwoing code:
if (appForm.q15a[i].checked==true && appForm.q15cert.value==""){
alert ("You must enter value!!!!")
valid = false;
}
What I'm trying to do is have the user enter some data based upon if
the radio button is true and the text field is empty. What could be
wrong with the following code above.
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Sep 21, 2009
I have the following hidden field within a form:<input type="hidden" name="test12" value="test12" />I also have the following function which does something if that field exists:
if(document.formName.test12.value == "thisdata")
{
//do something
[code]....
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Nov 12, 2003
i have an if structure checking to see of the fields have been filled in.
On the text fields though there is no value so how can i check to see if nothing there which would mean aint been filled in.
i tried
if(variable = ""){
bla bla bla ..............
}
doesnt work,
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Apr 3, 2006
<html>
<head>
<script type="text/javascript">
function convertHaH()
{
var mylist=Number(document.getElementById("percent"))
document.getElementById("remainder").value=100-mylist.value;
}
</script>
</head>
<body>
<form>
First percentage:
<input type="text" id="percent" onchange="convertHaH()">
<p>Remaining percent: <input type="text" id="remainder" size="20"></p>
</form>
</body>
This code works great, it will populate the second box. But I would like it to check if what was entered is a number if it isn't then an alert box shows stating they need to enter a number between 1 - 100, else it populates the second box.
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Jul 14, 2011
My Javascript doesn't display an error when the "bid" field is blank but I want it to.Everything else works okay but I'm not a Javascript programmer so I don't know where to begin.
function checkBid(fieldName,minValue,maxValue){
var numberfield = fieldName;
if (chkNumeric(fieldName,minValue,maxValue) == false){
[code]....
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Oct 12, 2006
I am doing some basic form validation stuff and I have two fields (phone, fax) that I need to check if the characters enterred are numeric, but still allow + and () characters to be enterred. If anything else has been enterred to display an error message.
Can someone point me to a resource ( I searched, but couldn't find an obvious one!) or give me a rundown on some code here to help me out?
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Jun 29, 2010
Is there anyway I can check if the cursor is an input field? I need a function that determines if the cursor is in any input field on the page.
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Mar 2, 2011
I have a form that is basically a table from my database.I have checkboxes on the left and only those checked get updated on submit.I�m trying to make an function that is called with an onChange event that will check the box if any of the fields in that row are altered. The id of the checkbox is checkeds[i] where �i� is the row number.The function is firing, but the box isn�t getting checked.
Code:
function checkBox(row)
{
[code].....
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Apr 13, 2010
Okay, new to this magical thing called Javascript and LOVING it. Don't know how I avoided it all these years. :thumbsup:
Running into a stupid issue and I am sure it is just something I am missing. I have a hidden field in my page with the default value of HELLO. I am trying to make a change based on the default value, but I obviously am doing something wrong because it won't display my hidden field value. [code]...
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