GetElementById Returns Null In IE - Works In Firefox
Jul 9, 2009
This seemed like it should be so simple. It works fine in Firefox, but not in IE. The goal is to disable the form's Submit button, until the question is answered. (The alert is for troubleshooting.)
Suppose I have the following inside a function:Code JavaScript:document.getElementById('display_content').innerHTML = "hello";The above works.However, when I define it like the following it says display_content is null on firefox error console.
Code JavaScript: var display_content = document.getElementById('display_content');
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.
HTML Code:<div class="drag q1 bar" style="top: 10px; left: 0px; position: absolute;">b</div>i assign variables like so:
Code: var style = notationrow[i].childNodes[nodecount].getAttribute("style"); var nodeclass = notationrow[i].childNodes[nodecount].getAttribute("class");
When using the code below the alert returns a value of null. In the past this has never happened, it has always returned the xml file I'm requesting. I have noticed a strange difference between browsers. This script is used to fill a form automatically. In its current state it works perfectly in opera, but does not work in firefox or IE (used to work in all the browsers). I'm by no means a javascript expert, am I missing something here?
I have a form in which I preset some text inside a readonly, disabled textarea using javascript ('data' being the text): document.getElementById("link_of_current_view2").value = data;
However, once I call my .php script to process the form, the element is null. How do I get it to pass along that data, which is in the textbox when the user views the form? <div id="sendlink" class="contact_form" style="z-index:10;"> <a class="close" onclick="document.sendlink_form.reset();return false">CLOSE</a> <form id='sendlink_form' name='sendlink_form' method="post" action="sendlink.php" > <label for="link_of_current_view2">Link: </label> <textarea id="link_of_current_view2" name="_of_current_view2" class="link_of_current_view" rows="2" disabled="disabled" wrap="soft" size="58" value="" readonly="readonly" value=/>
It's purpose is to check for valid date and allows formats mm/dd/yyyy, m/dd/yyyy, mm/d/yyyy or m/d/yyyy.
When I try it with the code below it always returns null.
Code:
function isValidDate(/* String */ p1_date) { var x = "^(((0?[1-9]|1[012])/(0?[1-9]|1d|2[0-8])|(0?[13456789]|1[012])/(29|30)|(0?[13578]|1[02])/31)/(19|[2-9]d)d{2}|0?2/29/((19|[2-9]d)(0[48]|[2468][048]|[13579][26])|(([2468][048]|[3579][26])00)))$";
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?
This function was working in Safari but not in Firefox. I was referencing a couple of elements using the forms[] array instead of getElementById(). I changed those refernces to use getElementById() and now the calculateTotals function does not work in Safari or Firefox.
So I did an alert box to see ucell and it was null. I tried two more alert boxes for the id I was passing to getElementById and for the id of the actual element on the page (which was also created dynamically). They were both identical. The element is created in the onload event, and I am not calling the calculateTotals function until there is onchange event on a text box. So it is not that the element has not been created yet. . Code:
Why this simple script is not working. Trying to use getElementById() but Firebug says the ID is null. I've tried troubleshooting by accessing other ID's but they all come back 'null'. Trying to add 2 classes based on an ID: <script> pageId = 1; if(pageId == 1) { //alert('This is page' + pageId); document.getElementById('arta').setAttribute("class", "menu-on menu-a"); } <./script>
An online example is here: [URL]. I also tried accessing the id like below but got the same result: document.arta.setAttribute('class', 'menu-on menu-a');
I'm using the $F of the prototype library to send data through the Ajax Request. I'm having problems using the $F to reference fields sent back through an original Request. My first request sends a form back to the user in the type such as <input text name=foo> and at the bottom of the returned form I have a second ajax call to send the fresh data to the another script. The problem is that the new data in the form cannot be referenced from $F. My question is how can I pass the new data in the javascript to another Ajax call either by $F or by other means?
I have a following string: var myHTML = "<html><body>testing hope this work in html</body></html>"; alert($(myHTML).children("body").html()); Why does the alert return NULL, instead of "testing hope this work in html" ???
For some reason getElementById continues to tell me that it had grabbed a null value despite any value I input. I am using firefox 3.6.8. Am I doing something wrong here?
I'm trying to retrieve some data trough yahoo pipes, but it always returns null. However if i go to my yahoo pipe's site and i launch it, the pipe works perfectly.[code]
Code: <script type='text/javascript'> var value; initEditor('tbMsg', true);[code]....
It works and alerts 1, but that's only if 'ifm' is set. If I were to take the above code and backspace out the i in ifm so it was fm, when I refresh my browser neither 1 or 2 gets alerted. Is this javascript's default behaviour, if so how can make it alert 2?
Hey all, I'm using a fairly simple accordion script. When I went to take a gander at the page in IE I found that the onclick function of the script doesn't respond. It works in FF, Safari, Chrome and Compatibility Mode in IE 8
the error message IE gives me is
Message: 'h' is null or not an object Line: 13 Char: 77 Code: 0 URI: http://proposalfor.us/js/script.js
I modified a little a script from dynamicdrive.com (Animated Collapsible DIV v2.01[URL]... It works well, but something is wrong. When you click on the button image a javascript error popup appears:
An error exists inside your "ontoggle" function: TypeError: document.getElementById(divobj.id + "_info-toggle") is null Aborting execution of function.
You can see it in: http://cineout.es/div_test/divs_test2.html
Currently transitioning from a shared host to a dedicated server. The same code that works on the old server is not working on the dedicated server. It is a simple AJAX request like:
<code> function createXMLHttpRequest() { if (window.ActiveXObject) { xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); } else if (window.XMLHttpRequest) { xmlHttp = new XMLHttpRequest(); } }
With the code as is above, the requests works fine in IE. With Firefox it throws a 403 on the page. A call to the response.php page with parameters runs correctly outside of AJAX. Changing all POST requests to GET resolves the issue, but I would prefer not to have to change ALL POST requests to GET requests.
Does anyone know of a setting on the new server that can cause FireFox (1.5.x and 2.0.x) to return a 403 with an AJAX post call?