I cannot get the 2 getElementById functions to work and I am a beginner so I am sure it is something simple but I have not been able to fix it. I need to click on the text to change the font.
<?xml version = "1.0" encoding = "utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns = "http://www.w3.org/1999/xhtml">
[Code].....
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')}
I found an example code browsing on the internet that I have used to put partly transparent pictures on top of a background image (a map with several areas), The partly transparent pictures is used to change the color of an area when that area of the map is clicked (I have put a transparent image map on top.) In my css style section the display for the pictures is set to display:none I now want to extend the script to make it possible to click on an other part of the background map and change the color of that area without changing the color of the first area. My idea was to use nested arrays for this, and thus reuse the function changeImage. To test this I tried to add a new array but for some reason it doesn't work.
[Code]....
This seems like a total beginner thing, but I don't know why it isn't working. I'm working from examples from a sitepoint pdf. Here's my html:
Code:
<body>
<h1 id="stupid">sdfasd</h1>
<p>sdjfa</p>
[code]....
When I run an if statement, I'll get an alert letting me know that the value of target is null, but why is it null? It should contain a reference to the h1 node.
I've got here a sample of my function which is supposed to fade a
certain piece of text to another colour. This line is then located in a
for loop and it works pretty well in IE 6. However, in Firefox, and thus
I assume it will be the same in Netscape and Mozilla, it gives a problem
with the: getElementById('main_txt'). Due to that in setTimeout("",) it
requires the "" signes and thus I can not use the same ones in the
getElement part. IE has no problem with using '' in there, Firefox,
however, does. Can anyone think of how to get around this and make
firefox do this?
window.setTimeout("document.getElementById('main_txt').style.color =
'rgb("+red+","+green+","+blue+")'",delay*step);
"<body>
I don't quite understand the getElementById property. Is there a way I can get it so that I click on the biography link and an alert displays?
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..
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 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 keep getting an error stating "getElementById("ballElement") is null, but I have a div with that exact id. I have looked at the JS script before that line, but found no errors there either. Please take a minute to see if you find something.
[Code]...
Should I use both name and id
<div name="abc" id="abc"> for using getElementById in NS?
I am trying to alter css using javascript as well as use the innerHTML
function. I have pasted below 3 forms that access getElementById in
slightly different ways (I wanted to rule out that it was the method.)
All 3 work fine on IE but only work momentarily on Firefox. For
example, one form has text that changes from red to black when the user
clicks the button. In IE it changes. In Firefox it changes for a
split second then goes back to black. Code:
I've been trying to follow the example from the sitepoint book on DHTML to change the href property of a link, but it doesn't work no matter what I try. Here's the code in the HTML file: Code:
View 1 Replies View RelatedI have this problem and when I came looking for help, I checked out the other thread like this but I couldn't get it to work. Here is the function -
PHP Code:
function newForm(focus, field)
{
if ( focus == 'no' )
{
if ( document.getElementById(field).innerText == '' )
{
document.getElementById(field).innerText = '____________'
}
}
if ( focus == 'yes' )
{
if ( document.getElementById(field).innerText == '____________' )
{
document.getElementById(field).innerText = ''
}
}
}
and here is the form -
PHP Code:
<b>Field 1:</b> <input type='text' name='field1' class='textbox' value='____________' onFocus="newForm('yes', 'field1')" onFocusOut="newForm('no', 'field1')" /><br /><br />
<b>Field 2:</b> <input type='text' name='field2' class='textbox' value='____________' onFocus="document.form.field2.innerText=''" onFocusOut="document.form.field2.innerText='____________'" /><br /><br />
field1 uses the function but field2 uses just onFocus and onFocusOut but as you can see, it won't work.
Works fine in FF, Safari . . . but not with IE. The error is "Object doesn't support this property or method".I have narrowed it down to this line (and a few like it)name = escape(document.getElementById('name').value);The escape() is not the issue, same with or without.I am trying to capture the text value from the field with id='name'. I have found discussions about this problem with IE, but not a solution. This must be easy, just trying to get a cross browser solution to load a JS variable with an <input> value.
View 7 Replies View RelatedMy document had the following nested DIV structure, with a possible
<SPAN> between the DIV and the <A> elements:
<div id="container">
<div id="D1">
<span>blah blah</span><br>
<A id="A1">item</a><br>
How do I refer to multiple elements with IDs such as question1,
question2, question3 etc, in following?
document.getElementById('question').innerHTML
I want to use
for (var num=1;num<6;num++) {
document.getElementById('question').innerHTML
}
but cannot work out how to get the question1, question2, etc into the
code...
I came across a third party script I want to learn how to configure as
well as learn more dhtml in the doing. I'm not much of a JS guy yet
but I'm working on it.
This script works fine in IE6 but is a dead fish in FireFox. There is
no support offered on the site where it came from.....
Is there any wildcard, like *, for addressing all the element ID's on the
page at once, like if you want to hide all layers at once. For example:
document.getElementById('*').style.visibility = 'hidden'
I know the above doesn't work but you get what I'm driving at right? Is
there anything like that for that method or in javascript in general?
I have this annoying problem with netscape...
I'm trying to access a form value by using getElementByID and in NS i
end up with a null reference.
The following HTML is the form component that gives me headache:
<form name='task' ...>
....
<select name='prioritySelect' class='selectwidth'>
<option value=''>Choose one</option>
<option value=Ƈ'>Critical</option>
<option value=ƈ'>High</option>
<option value=Ɖ'>Medium</option>
<option value=Ɗ'>Low</option>
</select>
....
</form>
And the related javascript code:
if(document.getElementById("prioritySelect").disabled == false)
{ ... }
When digging into this I can get the desired information by using
document.task.prioritySelect, but that should not be necessary, right?
I hope that anyone knows how to deal with this problem..
The following code is not working for IE.
Code:
I can run the following code in Firefox. But, in IE8 the lines below cause an error:
Code:
I have some simple javascript code that works fine in chrome and safari, but not Ie8
Why? And how do I correct?
Is it just me, or do variables not work in getElementById? For example:
document.getElementById("div"+divnumber)...
i am fairly new to javascript and XML. i'm trying to loop through some nodes and drop the output into a series of DIVs using getElementById. here's the code for that: Code:
View 2 Replies View RelatedI've built a table on the fly within a js function. In another function I'm trying to get the value of a cell in a particular row on that table. I've retrieved the cell object but cannot get it's value :
var claimDate = parent.expenseDisplay.document.getElementById("row"+lineNo+"Date");
now I thought that the following would give the the data
var cdate = getObject(claimDate).value;