Check Checkbox OnChange Of Another Field?
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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Jan 17, 2009
Heres my javascript code that will verify email from email input field and check if the checkbox (I agree condition) was checked:
[Code]....
However, this will work fine when calling with a link "javascript:validate('inputForm');" but if I try to prevent users by submitting form with pressing enter I put it in form onSubmit parameter: <form .. onSubmit="javascript:validate('inputForm');"> which will check the forms and submit data (do return) no matter if it matched or no.
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Aug 7, 2009
I want to create a javascript function where I have a dropdown list and onChage I want to update a txt field with the current date in the dd/mm/yyyy format.
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Jun 21, 2010
So here's what i want to do:
i have 2 checkboxes,
when Checkbox A is checked, i want to automatically check the checkbox B. When A is unchecked, then uncheck B.how can i do that?
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Mar 8, 2007
I want to check that the text box does not contain any thing other than numbers when any single key is pressed and do not allow keys other than number.
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Sep 27, 2009
<input type="checkbox" id="priority" /><span class="presult">0 USD</span>
I want when checkbox is checked, the span will have 500 USD. When checkbox is unchecked the span will return 0.This is what I've got, have no idea why not work.
Code JavaScript:
if ($('#priority').is(':checked')) {
$('.presult').text('500 USD');
[code]......
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Jun 9, 2006
Is there a method to call a javascript function on change of the state of a checkbox control in asp.net without having postback the control.
it generates following html source at the client end.
input id="chkInterest1" type="checkbox" name="chkInterest1" /><label for="chkInterest1">Interest1</label>
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Feb 1, 2010
I'd like to know if it's possible to invoke associated onChange action of check box when changing it's state with another javascript command... ie.
<input type="checkbox" name="y" onChange="javascript: func('var');">
document.x.y.field[i].checked = true;
When I execute last line I'd like func('var') to be run as well. Unfortunately it doesn't happen as of in the example above.
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May 20, 2011
I have a website which uses several forms to input data, each form contains fields for the user to complete and at the end of the each form the user has the option to proceed or go back.The problem is, on form1 there is a drop down box which determines the content of subsequent forms but when a user partially completes form2 but then goes back to form1 and changes the drop down box selection, the onchange function reloads the subsequent forms but it does not clear the previous form2 values so an error is generated because those inputs are not required with the change made to the drop down box. I have tried setting the ids to zero using getelementbyid on form1 but it does not seem to work presumably because the ids are on form2 not form1?
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Sep 16, 2009
Have an asp.net form where the textboxes have had the onblur attribute added. Though VS2008 still barks it's an invalid attribute...However, my problem is primarily w/the txtFICODate field.When testing using 10/10/2009 in this field, the code displays the appropriate msg based on format param. However, on exiting the isValidDate function in debug mode, I see that the code does not stop at the txtFICODate html but moves to the txtDOBB isValidDate function. Here the param is MM/DD/YYYY and it loops back into the function but now displays a different format message.Previous code (ValidateFICODate(obj)) below also caused the same looping error.
Debugging the same code with the txtDOBB field (10/10/56), I see it enter the function, display the appropriate message and exit. However, in debug, the code comes back to the function and then selects the field contents.how to fix problem so code stops at the txtFICODate field .Using xp Pro SP3, visual studio 2008 (c#).in the process of writing this, I searched other post here related to onblur + loop. So changed the event to onchange...and while the looping does not now occur, the focus just moves to the next field.
On page load code(if (!isPostBack)):
txtFICODate.Attributes.Add("onblur", "isValidDate(this, 'MM/DD/YY');");
txtDOBB.Attributes.Add("onblur", "isValidDate(this, 'MM/DD/YYYY');");
[code]....
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Jun 15, 2005
<SELECT NAME="subcategory" class="small" onchange="this.blur();">
doesn't remove focus from the drop-down field?
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Jul 23, 2005
I can't get a checkbox to check when the
value of a text field changes to something greater than 0.
<script language=JavaScript>
<!-- Begin
function sel_comm(comm_val)
{
if (comm_val > 0)
{
document.inhouse-f2.add_comm.checked = true;
}
}
// End -->
</script>
<INPUT TYPE="checkbox" NAME="add_comm" ID="add_comm" VALUE="1">
Commission: <INPUT TYPE="text" NAME="item_comm" ID="item_comm"
size="6" onChange="sel_comm(this.value);">
I just don't get why it's not working. I must be missing something,
but I have no idea what. The FORM tag's NAME and ID elements are
"inhouse-f2". What else could it be?
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Jan 26, 2006
I'm using the following code for a checkbox that when clicked, either
checks or unchecks a group of checkboxes on a form. The code works
fine, except when there is only one checkbox in the group in which case
the check all checkbox doesn't work at all.
The code working with three checkboxes in a group is as follows, but
remove two of the three and you will see the code stops working:
<script language="javascript" type="text/javascript">
function checkAll( control, cbGroupName )
{
var cbGroup = control.form.elements[cbGroupName], i = 0, cb;
while( cb = cbGroup[i++] )
{
cb.checked = control.checked;
}}
</script>
<form>
Check all
<input type="checkbox" this,'select[]' );" >
<br><br>
<input type="checkbox" name="select[]" value="234">
<input type="checkbox" name="select[]" value="235">
<input type="checkbox" name="select[]" value="236">
</form>
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Sep 14, 2004
I'm pulling some records out of a database and placing a check
box next to each record that the user can check and use the delete button to delete the record.
I'm looking for some help to create a javascript function that I can fire
off when the user clicks on delete to check if a any records are checked
before submiting the deletion. if no check boxes are checked, I want to alertthe user to make a selection.
I'm thinking about having a loop in this function to loop through the
checkboxes and figuer out if at least 1 box is checked. Code:
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Sep 28, 2004
I have a page that displays records returned from a database and places a check box
next to each record that the end user can check if they want to delete a record.
The function below checks to make sure that at least 1 checkbox was checked before allowing the delete to be processed.
this function works just fine when I have more than 1 recored returned, but if I only have 1 record displayed on the page and check it and hit the delete button, I get this error
"Checked" is null or not an object
is there a way to modify the function to fix this problem.
function isCheckBoxChecked(boxgrp)
// This function is used to check if any check boxes
// are checked before processing
{
var i = boxgrp.length;
do
if (boxgrp[--i].checked)
return true
while (i);
alert('Select an Item to Delete');
return false
}
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Nov 27, 2006
When a checkbox is checked, I would like a group of checkboxes on a page to be automatically checked.
I was thinking of going about it like this:
- value of top checkbox = check1
- values of all checkboxes that should be automatically checked (when top checkbox is checked)= check1_1, check1_2, check1_3 etc
- on the onclick event of the top checkbox, a piece of javascript would be executed that would iterate through all the checkboxes.
x = 1;
while (x < 10)
{
check1_(value of x).checked = true;
x++;
}
How could i go about doing the above in javascript?
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Sep 14, 2007
In my program, I have GMap logic that outputs location information to
a disabled input field (was previously a label). Then, when a
user clicks on a link (to start a new map), I want to save the location
data to an array prior to server processing. So, onchange, save the
input field's value to array[last_click]. But, because this field is
hidden (or readonly) I am not sure how to go about this.
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Dec 4, 2010
I have a form where I need to populate a field with a math equation using inputs in the form. Here's the example:
fieldA fieldB fieldC ... fieldJ
fieldX
As the user inputs a number in fieldA, I need fieldX to immediately change and display the average of fieldA - fieldJ if the field is not empty (valid entry for all field's is a number between 20 - 80). I don't have the ability to make many changes in the form because I'm using a product called Gravity Forms for Wordpress.
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Aug 4, 2010
I have a multiple fields on my page and wish to have a reusable javascript to update the previous box with the selction made.how would this be done
<form name="form1" method="post" action="">
<p>
<input type="textone" name="textfieldone" id="textfieldone">
[code]....
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Apr 26, 2007
I want to add an event to a generated SELECT field. It's an onChange call to a function named calculateSubtotal(). The result I want would look like <select name="..." id="..." onChange="calculateSubtotal()">.
This is what I've got so far. The drop menu is created with no error, but no onChange either. Code:
var newTour = document.createElement('SELECT');
newTour.name = 'registour' + rowCount;
newTour.id = 'registour' + rowCount;
var newAttrib = document.createTextNode('onChange="calculateSubtotal()"');
addOption(newTour, '');
addOption(newTour, 'Tour 1');
addOption(newTour, 'Tour 2');
addOption(newTour, 'Tour 3');
document.getElementById('groupreg').appendChild(newTour);
document.getElementById(newTour.id).appendChild(newAttrib);
I also tried this, it doesn't work either:
newTour.onchange = 'calculateSubtotal()'
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Nov 13, 2009
I would like to get the id of a html check box when the client clicks it. I want to do this on the client side so i need to use java script. I want to be able to do this in both fire fox and ie window.event.srcElement works great for ie but not for firefox do not tell me to use Event.target for firefox because that does not work. At least it is not working for me anyway.
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Jan 10, 2010
trying to build two different functions:#1: Where cDay would be Mo and loops through 24 times:ie: document.delTime."cDay"1.checked = true;button would be <input type="button" name="Mo" value="Check All Mo" onclick="checkAll(Mo)">I have this but cant work out how to parse cDay into the function correctly:
function checkAll(cDay) {
document.delTime.Mo1.checked = true;
document.delTime.Mo2.checked = true;
[code]....
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Mar 5, 2003
How do you check if a checkbox is checked?
I tried this:
if (frmForm.chkMycheckbox.checked==true)
but it didn't work.
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Apr 29, 2010
<li>
<label><spring:message code="label.roles"/></label>
<form:checkbox path="roleIds" value="1" />
[code]....
Now what i want is to give an error message if any of checkbox is not selected , how can i do it Using jquery
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Jul 23, 2005
I have a requirement in which, I need to capture a loan amount and the amount of down payment for that loan. According to the requirement, the user is going to enter enter the loan amount and then will enter the down payment in either percentage of the loan amount or an actual amount. I have designed a form to capture this information with three text fields, one each for loan amount, down payment in % and down payment in $.
So the user has the option of entering downpayment in $ or in %. If the user enter the down payment in $ then my code has to calculate the equivalent % value and populate the corresponding text field and vice versa. My question here is, what would be the best way to handle this
situation.
Shall i just use the OnChange event of the text field to handle this scenario? If I do that wont I be running into a loop?
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Dec 13, 2010
I have some fields on my form that are auto-populating with a difference from 2 input fields using onChange, easy stuff. The correct value is stored in the DB, to 3 decimal places (correct, since data type is a float with 3 decimals).The challenge I am having is to get the number that is auto-displaying on the form to format to 3 decimals. For example, when I enter the first number at 44.8, and a second number of 44.666, the onChange command displays '0.13400000000000034'. This is saved in the db correctly as, '0.134' and once the form is submitted the correct value of 0.134 displays since it is pulling directly from the db. I would like to format the onChange display with the toFixed command so the extra decimals don't show onChange.
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