I wanted to know if document.getElementById works while accessing form elements. I tried doing this just for testing purposes
This code doesnt work
function validateForm()
{
var val = document.getElementById("id_login").getAttribute("value");
alert(val);
return false;
[Code]...
Why doesnt document.getElementByid work with form objects.it works with all non form HTML objects..
I'm a perplexed nube, and I can't understand how document.getElementById evaluates to true when no parameter is passed to getElementById. This code alerts 'foo' if (document.getElementById) {alert('foo')} else {alert('bar')}
Just to double check, this code alerts 'bar'
if (!document.getElementById) {alert('foo')} else {alert('bar')}
The Javascript
Code:
document.getElementById('all_days_div').style.display = 'none';
The HTML section containing the div the Javascript should be hiding
Code:
<div id="all_days_div" style="display:block;">
<p align="right" >
Show All Days
</p>
</div>
When the JavaScript code is called, instead of hiding the div, I get the following error:"Cannot read property style of null" Do you see anything wrong with what I've written, or is my problem elsewhere?
I'm trying to get the value of a selected option value. I've tried using getElementById("fieldname").selectedIndex.value and formname.elements["fieldname"].options[selectedIndex].value with no joy.
View 1 Replies View RelatedI have a draggable marker on my page that sets the value of a javascript variable when the marker is released.I want to submit this value to store it in a database however I cannot figure out how to pass this javascript variable as a hidden form field.Here is my code. I suspect this is completelyhow to make this "lat" value available to me after the form has been submitted.
Code:
<form name="myform" method="post" action="" >
<input type="hidden" name="lat" id="lat"
[code].....
I want to restrict getElementById to search children of a specific element instead of searching the entire document, in the same way that I can do getElementsByTagName using a specific element as the parent.
In this particular instance the parent is a table and the elements I'm interested in are all TDs, so I did the basic getElementsByTagName('TD') off the table and looped through this array checking the IDs. However, I'm suspecting that the browser can do getElementById faster than I can do a loop in javascript. Is there a neater way to do this? For now, I'll settle for IE-only solutions, though it would be nice to have things work in generic browsers.
I am having a problem with the submit() method that is driving me nuts. I'm using document.form.submit() with large text fields (approx. 2000 characters) and am getting a "Invalid Syntax" error. If I do the same thing with a text field of under 1500 characters, it works fine.
Is there some size limit here that I don't know about?
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:
There are 3 buttons on a web page. On clicking each button a same popup window (say window1) opens up. Now there is another button on this popup window (window1), which further opens up to another popup window (say window2). On selecting some value from the 'window2', that value is passed onto the 'window1'. There is a 'Find' link on a 'window1', which calls a javascript function 'clicked()':
[Code]...
There are 3 buttons on a web page. On clicking each button a same popup window (say window1) opens up. Now there is another button on this popup window (window1), which further opens up to another popup window (say window2). On selecting some value from the 'window2', that value is passed onto the 'window1'. There is a 'Find' link on a 'window1', which calls a javascript function 'clicked()':
<head>
<%
Dim command
command = Request.Form("hid");
[code]....
This full code works fine on my machine. But this code does not work properly when run on the client-side!, although the same server and the same deployed application is being accessed. There is no particular sequence/scenario but for eg.When say button1 clicked->window1 opens->window2 is opened->value selected->returned to window1->Clicked on Find-> clicked on Ok->returned on the main page.Then repeated the same scenario for say 3rd button. (Till now 'Find' link works fine).Now repeated the same scenario for 2nd button and here 'after' message is obtained but 'inside Find' is not printed!
I'm still struggling with creating a properly formatted form. This problem it two-fold. The first part isn't strictly a javascript problem, but I've included it here because it relates to the second part, which is:
1. Given the form below, how should I structure the input names to get an array like that at bottom?
2. The scripts are used to provide running totals and subtotals. They're fun - try them! But how should I modify these scripts so that they can continue to work with the amended naming policy?
[Code]...
Do you know why js does not reset this multi select box?
<select name="LOB" multiple="multiple" size="5" style="background:#fff3b3;width:150px" >
<option value="DP"
>DP</option>
<option value="DTV"
>DTV</option>
<option value="HSD"
>HSD</option>
<option value="PPV"
>PPV</option>
<option value="RF"
>RF</option>
<option value="VOD"
>VOD</option>
</select>
Code:
function clearForm(oForm) {
var elements = oForm.elements;
oForm.reset();
for(i=0; i<elements.length; i++) {
field_type = elements[i].type.toLowerCase();
switch(field_type) {
case "text":
case "password":
case "textarea":
case "hidden":
elements[i].value = "";
break;
case "radio":
case "checkbox":
if (elements[i].checked) {
elements[i].checked = false;
}
break;
case "select-one":
case "select-multi":
//alert(elements[i].value);
elements[i].selectedIndex = -1;
break;
default:
break;
}}}
I have a issue with a javascript code that I wrote. This script is a simply for calculating the summation of 2 text input boxes and printing it in another text input box within the form. The entire form is then sent using Form post.The total is written back to the form's total text input box using the code below:
document.getElementById ('total').value = total
This code works perfectly for displaying the values on screen. However, when I send the form (PHP Post), the " total " field is empty. I have searched all over for possible solutions. But no solution yet.
1. document.getElementById ('total').INNERHTML = total .This does not even work on screen and total field is not updated on screen. Needless to say, the PHP Post variable was also empty.
Im using a JavaScript function to dynamically add rows of user-input data to a form, but Im having problems getting it to work properly with Firefox (works well in IE, though). We are using Struts 1.3 and JSPs, if that makes a difference.
The JavaScript function seems to work initially because the newly added row will show up on the JSP after the user enters their data and clicks a button that uses an onclick event to call the function. However, when I submit the form the new elements dont get included in the request. The result is that when I use the following code in my Struts Action Class to get all the parameter names submitted in the request, I dont receive the new form elements that were added by the JavaScript function and I cant process those newly added records:
Enumeration e = request.getParameterNames();
Here is the JavaScript code for the function that I call to dynamically add rows of data to the form.
function addData(tableId, distBedsCode, empCode, fte) {
var tbl = document.getElementById(tableId);
//grab how many rows are in the table
var lastRow = tbl.rows.length;
[Code].....
Ive tried using hiddenElem.setAttribute(name,) at the end of the above code, instead of something like hiddenElem.name = , but that didnt work. There is just some difference between the way Firefox handles things and the way IE handles them
The following code is not working for IE.
Code:
i have the code in JS:
if(drop_list.value == "zed-catcher/11")
{
input_box.disabled=false;
var catcher_id = document.getElementById('lpm_service_catcher_id');
catcher_id.value = 11;
[Code]...
I would like to know if is better to use document.forms to detect forms
or getElementById.
I have an onchange method for a select box that goes something like
this (the select is in a form named aForm):
function page_on_change() {
pageElement = aForm.my_page_id;
aForm.nav_page_name.value =
pages[pageElement.options[ pageElement.selectedIndex ].value];
var si = pageElement.selectedIndex;
for ( i = 0 ; i < pages.size ; i++ ) {
document.getElementById("id_" + i).style.display='none'
}
document.getElementbyId("id_" + si).style.display='none'
}
IE fails on the statement:
document.getElementbyId("id_" + si).style.display='none'
and says it doesn't support this property.
What is the workaround?
Basically i'm trying to draw a box over an image which
is turning out to be a nightmare. The problem i'm getting at the moment
is that i'm creating a line with <div which works when it's not hidden
but I need to be able to make it hidden so I can use layers to show all
when it finished drawing to make it smoother. This is how some other
scripts are doing it that i've seen. So i've got it drawing a line and I
need getElementById to pick out the layer but it's only picking out NULL
with the one i've got enabled below. I've tried the others but they just
come out as errors. I need to get top2 which is the <div line to show
itself but I can't seem to reference it by getElementById. I use linux
mozilla so i need it working in mozilla as well as windows that's why
i'm using getElementById. My code is below any ideas anyone?
I'm trying to do is change the backgroundColor of my input text with js..
This the js part
Code:
And this is the html part
Code:
Basicly what the script do is to check the hidden field cf with value of '0' if found it will execute changeCssProp(thefield)..but the problem is js return error of document.getElementById(thefield) is null
I'm trying to do is change the backgroundColor of my input text with js..
This the js part
Basicly what the script do is to check the hidden field cf with value of '0' if found it will execute changeCssProp(thefield)..but the problem is js return error of document.getElementById(thefield) is null
I am trying to use document.getElementById in FF but its not working. There is a main page. in that mainpage there is a iframe and in that iframe (id = DocFrame) there is a textbox (id="fileuploadedcnt") which i am trying to access. there is no error. ofcourse i have given name and id to the textbox. Below is the code
function ConfirmCertificate(id , Project_ID , Subprogram_ID , ITCType_TI) {
frm=document.mainform;
//fileuploadedcnt = (document.frames("DocFrame").document.forms("upload_form").elements("fileuploadedcnt").value);
[Code].....
In the abpve case i tried both the name and id properties. with Name property i get the HTMLObj alert but again it fails if i attach value method. And for id, it doesnt work at all
No errors ofcourse in both the cases
I've got the following code on one of my pages, it works fine in IE6 and Netscape 6.2, but when you get around to using it on Netscape Navigator 4.08 it doesn't work, instead giving me a "document.getElementByID is not a function" error. Here's the code it has a problem with...
function CrseDets(IDS) {
window.open('coursedetails.asp?whereby=' + document.getElementById(IDS).value,null,'top=0,left=0,width=672,height=500, background="gfx/backgrd.gif", scrollbars=yes');
}
I have the following code. It is not working for firefox, IExplorer and Opera.
<script id="url" name="url" language="JavaScript" type="text/javascript" src=""></script>
<script language="JavaScript" type="text/javascript">
var u = document.getElementByName("url");
[Code]....
I use in my javascript the "document.getElementById" code.
This code works as it should in Firefox, but in IE I get the following error:
This code is not working What i am doing wrong here?
HTML Code:
<script type="text/javascript">
document.getElementById("divName").style.height = 500px;
</script>
[Code]...