Accessing Hidden Objects In A Form
Jul 23, 2005
Can anyone tell me the best way to access a hidden object in a form? I could use a hard-coded index to the elements of the form, but it's too easy to add something before the hidden object and mess up the indexing. For example:
The form has a tagid of "myForm"
The hidden object has a tagId of "myHiddenObj"
I can get the form elements by using
var formElements = document.getElementById('myForm').elements
But there doesn't seem to be any way to do this:
document.getElementById('myHiddenObj')
Assuming I have the elements as obtained above, none of these have
worked for me either:
formElements['myHiddenObj']
formElements["myHiddenObj"]
formElements.myHiddenObj
Anyone have an idea?
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Jul 1, 2007
See the below objects:
function Manager()
{
this.reports=new Reports();
}
function Reports()
{
//How do I access Manager from here?
}
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Jan 12, 2010
I have an object with a member function that changes something on the objects state. This works perfectly fine in the easy case. But when I use an $.ajax call within the function it doesn't work. Here is the example code and failing QUnit tests: [URL]
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Jan 13, 2006
In some hidden variable (<input type="hidden" name="hiddenId"
value="test" /> ,i stored some value.I accessed the value "test" using
var id = document.getElementById( 'hiddenId' );
It is working fine in IE. But in Mozilla Firefox , null value is
returned.Is there any way to use hidden variables compatible to
browsers......?
I don't know browser compatibility in javascript.
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Nov 23, 2005
I am finding some unusual behavior with techniques I am using to
show/hide/update data without having to refresh the page. I'm quite
sure it's developer ignorance on my part and would be grateful for any
suggestions.
My page has 10 tables with their visibility controlled by the user
making a menu selection. For example, selecting menu_1 calls a
function which displays table_1 by setting table_1's style display:
block and hides tables 2-10 by setting their respective styles to
display: none. Everything in this simple navigational approach works
as expected.
I am also using the HTTPRequest object to update relevant objects on
the page based on user input. The problem I am seeing is when the
HTTPRequest object is used to update DOM objects contained within the
"invisible" tables -- or more accurately within those tables having
their style display:none. I have tried using both the HTTPRequest
object's synchronous and asynchronous approach and am seeing the same
results.
I've tested when all of the tables are "visible" by setting their style
settings to display:block and HTTPRequest calls work as expected.
The other twist in my example is that these HTTPRequest calls are each
making a SQL query and updating a chart object within the table, which
may take about 500ms each to return. My initial impression is that it
looks as if the page is being rendered too fast because any more than
three charts on a page is when the charts start getting misplaced on
the page. Again, everything works fine when all tables are visible.
Is this a known problem with HTTPRequest, or do I need to migrate my
coding techniques to the 21th century?
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Mar 12, 2010
I want to setOffset on items before they are shown. However, as offset() always returns {top:0,left:0} on items with display: none, this doesn't work.
I suggest not using the curTop and curLeft values if the offset is 0,0 and the item !is(:visible)
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Jul 23, 2005
How can I make an input box (or other objects) disabled or greyed out and
still have them submit in the form?
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Jun 2, 2009
I have a form. Upon submit, the data is sent to the server. Under certain conditions, the form is replaced via ajax with a set of radio buttons that offer the user a a choice.I need to access the radio buttons before I submit the form again.Normally I could just access the buttons with getelementbyid but it is not available, presumably because they were generated via ajax.I could submit the form just to access the radio buttons and then submit it again, but I'd like to avoid that.
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Jul 23, 2005
Does "document.formName.elementName.disable" work on hidden form text
elements? I have a form with some input fields that are associated with
some hidden text fields and I would like to disable all of the
categories inside the form when the page loads and only enable each
category as it is needed. Code:
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Nov 18, 2011
I want to get the code ( I cant write it Im still a newbie ) to check a form user/pass and trigger another hidden form.
Heres what going on:
Have created a form, Form 1 Login: it has a username and pass fields. It shares the page with a Members Login form.
I want javascript to check the user/pass on Form 1 Login against a user/pass I assign. I assume I can assign one in the Javascript code.
The script does not send the form to the server, it just checks to see that the user/pass agrees with what Ive assigned.
The script, if the user/pass is the same as I assigned, triggers a Registration form to pop up that Ive hidden with CSS left:-999em.
Now the script has fulfilled its function, its done. But heres what continues and Adobe BC does this part.
User fills out the pop up Registration form with any user/pass, their valid email and name.
Clicks Submit and the form sends the New user a new personal pass and new username via email.
User adds New user/pass to Members form and is allowed into the site.
This is a round about way but, I can not use php or server side in this process, BC does not allow server side only client side. So Im doing a work around. I know someone could find the Javascript even in a js folder. Tight security is not an issue. I researched this for weeks and BC tells me it will work with their system...I just dont know how to write it.
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Jul 23, 2005
I have 2 arrays:
var A1 = new Array();
A1[ 0 ] ="Y2";
var B1 = new Array();
B1[ 0 ] ="Y1";
B1[ 1 ] ="sink";
I also have a drop down menu with the names of the arrays. Say:
document.form.option[1].text returns 'B1'
Can I transform the string 'B1' into the array B1, so that:
document.form.option[1].text[1] returns 'sink'
Currently I'm doing this with conditionals, e.g.
if(document.form.option[1].text =="B1){do stuff}
but this gets a bit messy.
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Oct 26, 2005
how can i access this form feild? (this field has an array name)
<select name="field[247]">
<option value="no">no</option>
<option value="yes">yes</option>
</select>
i use "onChange" how can i access the selected field?
onChange="myfunction(document.form1.??????,)
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Aug 29, 2006
I'm creating a invoice application. In the JSP page user has an option to enter more than one location for each contract. I have created the JSP page. I face problem in calculating the total for the newlocation if user has added a new one. I'm posing my Invoice.jsp page below. Code:
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Mar 27, 2011
I am undertaking an assignment where I have to create a webpage that reads values from a database, and generate the appropriate amount of sliders (scroll bars) according to the number of database entires. The webpage functions like this: On index.php load, it reads all the slider values from the database and automatically generates and sets each slider to that value On setting each individual slider to a new value by adjusting the slider, the code automatically updates the slider value in the database via AJAX.
So far I have gotten both functionalities to work successfully. There is just one problem with the 2nd functionality. I can only get one slider value to save to the database at a time. I know how to fix the problem, I just do not know to achieve it. I shall now illustrate via snippets of code:
[Code]...
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Jul 23, 2005
I've been using some code to verify form data quite happily, but i've
recently changed the way my form is structured, and I can't get it to work
now.
Originally :
The form is called "form1", and I have selects called "PORTA", "PORTB" ...
etc...
I then had javascript that accessed these selects as below, and it worked
fine.
ind = document.form1.PORTD.selectedIndex;
val = document.form1.PORTD.options[ind].value;
dev = document.form1.PORTD.options[ind].text;
My form is now autogenerated, and form data is stored to file, so I now use
an associative array for thte form elements (so that I can loop through them
easily), The form elements names are now :
McuCfg[PORTA], McuCfg{PORTB} and so on
Now, I modified the javascript so that it now uses the McuCfg[] associative
array :
ind = document.form1.McuCfg[PORTD].selectedIndex;
val = document.form1.McuCfg[PORTD].options[ind].value;
dev = document.form1.McuCfg[PORTD].options[ind].text;
When the script runs, I get the error
"document.form1.McuCfg.PORTD is null or not an object"
I have used the same notation that i know works for the "options" array
although that's not an associative array.
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May 1, 2011
If I have inputs like this:
Code:
<form name = 'myform'>
<input type='text' name='Monday_1'>
<input type='text' name='Monday_2'>
[code]...
But can I somehow do this instead?:
Code:
<form name = 'myform'>
<input type='text' name='Monday[1]'>
<input type='text' name='Monday[2]'>
[code]...
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Sep 3, 2010
i am facing a problem in accessing form elements and returing them.Here the problem goes:
<script language="javascript" type="text/javascript">
function pop() {
newwindow2=window.open('','name','height=500,width=500');
[code]....
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Mar 15, 2005
I have 4 checkboxes in my form and wanna change the number (to be displayed) according to the selection made on the ListBox Menu
HTML PART of the code
<select name= "rights" onChange="chk_Count(this);">
<option value = 0 > Admin </option>
<option value = 1> guest </option>
</select>
<input type= "checkbox" name = "add" value = "on">
<input type= "checkbox" name = "edit" value = "on">
<input type= "checkbox" name = "delete" value = "on">
<input type= "checkbox" name = "view" value = "on">
I want that when I select Guest onle checkboxes for "ADD" n "VIEW" should be shown and when Admin is selected all four. but I am able to find out how to access those elements in the form
and change their properties.
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Oct 8, 2010
I feel like I've been server-side programming so long that I completely forget how client-side works. I have a super simple form:
Code:
<form action="page2.html" method="post/get">
First name: <input type="text" name="firstname" /><br />
Last name: <input type="text" name="lastname" />
<input type="submit" value="Submit" />
</form>
Is there a way to use Javascript on "page2.html" to access the contents of firstname and lastname and display them?
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Aug 1, 2011
Code:
oText = oForm.elements["text_element_name"]; OR
oText = oForm.elements[index];
[code]....
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Aug 10, 2009
i am creating text box Elements using DOM if only user needs it by using Create Element
var element = document.createElement("input");
element.setAttribute("type", "Textbox");
element.setAttribute("name", "group[]");
newdiv.appendChild(element);
[Code]...
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Apr 17, 2011
Is there a way in Javascript or Jquery to return an array of all objects underneath a certain point, ie. the mouse position. Basically, I have a series of images which link to various web pages but I have a large semi transparent image positioned over the top of the other images. I want to find the href of the background image that the mouse pointer clicks over.
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Jul 22, 2009
I have done this once before but it has been a while. How do I add a new form hidden field and value to an existing form and then submit the form within a function that can be run with an onclick event?
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Jul 23, 2005
I'm building a website that needs to be able to check the value of an
element and give it a new value based on what it's current value is.
So for example, if I had a product and my code read like this...
<input type="text" name="name" size="20"><br>
<input type="text" name="description" size="20"><br>
<select size="1" name="public">
<option value="1">on</option>
<option value="0">off</option>
</select>
Assuming the name of my form was "form", I could access the value of the
text fields by "window.document.form.FIELDNAME.value" and the select by
"window.document.form.public.selectedIndex". But the page i'm working with
has multiple products listed and so I've addopted a nming convention for the
elements name's so that I could access it more efficiently in PHP. So for
example, I'd have multiple products as such Code:
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Jul 23, 2005
I'm, having some problems with this function.
function displayElements()
{
for (i=0;i<document.forms[0].elements.length; ++i)
{
document.writeln(document.forms[0].elements[i].value);
}
}
I'm trying to loop through the only form (form[0]?) on my webpage and
display all their values. For some reason I'm only being shown the first
value?
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Jul 5, 2006
I have 1 form, and dozens of elements. In the select elements I use onchange="somefunc()". In this function I'd like to access and change the form element attributes (such as form.element.option[].value and form.element.option[].innerHTML).
Is there a way to access the element that has just changed (unsing onchange="somefunc()") by passing a "this.element" parameter to access the elements properties such as form.element.option[].value within the function?
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