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">
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.
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?
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.
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:
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.
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.....
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..
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:
I'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;