GetElementsByTagName() Coming Up Null?
Feb 4, 2010
I use Google Chrome because of the Javascript debugger that comes included and I keep getting the following errors with my AJAX script
Code:
Uncaught TypeError: Cannot call method 'getElementsByTagName' of null option.html:23
Uncaught TypeError: Cannot call method 'getElementsByTagName' of null
option.html:40
[Code]....
What is supposed to happen is I press either button then it calls either getoptions1() or getoptions2() which then lists the options using listoption() Then the user selects a color and setoption() gets called. I'm having a problem with either getoption function or the listoption function.
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Nov 24, 2011
I've written a code, that should be reading xml with js. But I have make an error.
[Code]....
Uncaught TypeError: Cannot call method 'getElementsByTagName' of null The error shold be in line 23, perhaps the problem is var http = null;
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Sep 17, 2010
I've boiled down my code to the essence of the problem; a variable which serves as a parameter to a function keeps coming up as 'undefined'. The code is quite simple:
....
<head>
<title>Yearly Calendar</title>
[code]....
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Jul 29, 2011
For some reason my variable is coming put with undefined.
I have looked and looked and i am sure it is obvious but i cannot figure it out.
How much of an amateur move i am making
Code:
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Jul 30, 2011
I did find the javascript twice in my code, once in the header and once here, so i removed it from the header. I also changed to src to the full url. But i am still getting this and i dont know why. the file is located in the root directory. found a solution. basically Internet Explorer is crappy and doesnt like the setAttribute property so had to change the onchange handler by directly changing the attrbute for the object like so.object.onchange = function() {}i have no idea what they means, does that mean i need to change swfobject.js or does that mean i have to change my xml request. and if it is the swfobject i have no clue what they mean or what lines
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Feb 3, 2010
I've been trying for hours and I can't figure out why IE6 is throwing an derror on the following line of code.
Code:
var parts = rgbString.match(/^rgb((d+),s*(d+),s*(d+))$/); This is the function:
Code:
function rgbToHex(rgbString)
{
var parts = rgbString.match(/^rgb((d+),s*(d+),s*(d+))$/);[code]....
And this is the error:'null' is null or not an object
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Jul 23, 2005
OK, so let's say, for example, I have a bit of HTML that looks like
this:
<td class="regular1b" valign="top">
<a href="notfound.html"><span class="list5"><b>Lecture
V</b></span></a>
</td>
And I want to save all the text ("all" meaning the tags and
everything) between the <td> and </td>. Using JavaScript, I was able
to isolate the <td></td> by doing:
var w = myTable.getElementsByTagName("TD");
So then I have an IF statement within a FOR loop that looks like:
if (w.item(i).className == "regular1b")
alert(w[i].childNodes[0].nodeValue);
The ALERT() is just a place holder to make sure things are working.
The thing is, nodeValue returns NULL because there's no actual text
within the <td></td> tags; the only thing there is more HTML code, and
the text between the <span></span> apparently isn't considered part of
the <td></td> tags.
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Jan 12, 2004
I'm using the getElementsByTagName method to obtain a customer listing of records. So far so good. However, I also want to reference the child nodes of the customer records.
ie.
<customer id="1234" name="Mr Dodd">
<purchase po="1" value="3.00"/>
<purchase po="2" value="4.00"/>
<purchase po="3" value="5.00"/>
</customer>
I used getElementsByTagName("customer") to obtain the list of customers, but I'm having trouble referencing the child nodes ie. purchase.
Does getElementsByTagName("customer") also obtain the child nodes, or only the matching element?
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Mar 30, 2009
I'm trying to run a script that runs in every browser except IE (IE 7) this is part of the script [code]...
On every other browser the alert(listLines.length) give me the number "16" that is the number of 'li' tags but in IE7 gives me [object] so as soon i get in the 'for' the scrip stop in IE.
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Dec 15, 2011
I would like to do this WITHOUT jQuery.
I have tried to get an event listener to listen for when the user presses Control-D on their keyboard. This would trigger a confirm delete function - if you've ever used QuickBooks Ctrl-D is the command that does this and this is a financial application.
Problem is that in FireFox, Ctrl-D means bookmark the page and this window pops up. I want to "return false" before this happens.
On this subject I would also like to take over Ctrl-C and Ctrl-V eventually but with Ctrl-D it will work for anything. here is what I have. Again, IT WORKS, but doesn't stop the natural event (bookmark page) fromhappening:
Code:
function AddOnkeypressCommand(strCommand){
//---- version 1.0, by , last edit 2004-12-14
//add to array of commands:
m_onkeypressCmds[m_onkeypressCmds.length] = strCommand;
[Code].....
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Jun 29, 2009
In my website i am planning to do portfolio things in that i gave fade in fade for all images this is working with same size of image.But i have images like this sizes 500/300, 300/150 like if i give this images into portfolio that time if one image fading to another one means that time small size imGE is going top or bottom like that ,I alighed as center.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
[Code]....
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Feb 24, 2011
After comming alert, cursor should not go to the next field. i am a beginner to script functions. can any one give me solution .
<script>
function validateDate(strdate)
{
if(strdate.length < 8 || strdate.length > 8)
{
alert("Error:Enter Valid Date");
}
[Code]...
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May 6, 2011
I have a single page with a single form, but I have split the form into 3 divs for styling purposes. I have some java script that is supposed to pull values from the text fields, and put them in a selct box using 'document.forms[0].name.value', but nothing is happening. I am wondering if having the form split into to divs is causing the JS to not be able to find the fields, using the forms array? Here is the form portion of the html code:
<form name="roster" action="">
<div id="left">
<dl>
<dt>Team Name</dt>
[Code].....
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Jul 28, 2005
I've got the following line of code which works fine in IE ...
line_1_numbers [0] = document.getElementsByTagName
('table')[table_index].rows (0).cells (0).innerText;
But it Firefox, it barks saying:
"Error: document.getElementsByTagName("table")[table_index].rows is not a
function"
Any ideas what this means?
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Mar 19, 2007
I have some img tags in my HTML code, and I am trying to implement some manipulation on each image. Thing is, when using document.getElementsByTagName('img'), the JS engine skips every 2nd img tag, so I get an array with only half of the deal.
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Jun 30, 2006
Here's the deal, If I access the page directly on my pc via the file system (i.e. I open up the file via: file::/path../main.html, the page and script runs just fine.
If however I point the browser to tomcat i.e. localhost:8080/blah
firefox spits out the error: getElementsByTagName is not a function.
Any thoughts or pointers? I'm totally confused over this..this is a built in function call?
note: I did an instanceof on the object making the call, and it does indeed confirm it is an object.
ps. I have confirmed I can access the all scripts/css files from the webserver (tomcat)
System:
FireFox (1.5.04), Tomcat, IE6 (also fails, even though I haven't found out how to see the js error details?)
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Nov 10, 2011
I have only IE8 (and older versions) issue with reading Gpx xml.Here is JavascriptCode:
var xmlhttp;
if (window.XMLHttpRequest) { code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
}
else { code for IE6, IE5
[Code]...
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Oct 28, 2009
I was looking at the documentation on this over at [url] and they have the following information:
Summary: Returns a list of elements with the given tag name. The subtree underneath the specified element is searched, excluding the element itself.
My question is this: what do they mean by "subtree?"
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Feb 27, 2006
Are there any ways to edit the html within an element without knowing the TagName?
I'm trying to add html code within a <td> element that has no name or ID. What I do know is that it's the third <td> element within the only <tr> in the table. Assume that none of the elements in the file have IDs or names. The html is produced by a compiled program, so I have no way of editing the HTML in order to add names or IDs. Code:
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Mar 29, 2011
I've been given an assignment to create an alert message everytime a link is clicked on a page. It can be 10 thousand links on the page. Doesn't matter. figure out what the javascript would be?I've tried this but it doesn't work.document.getElementsByTagName("a") = alert("hello");
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Apr 7, 2011
$("#mask").ajaxStart(function () {
mask.load();
}).ajaxStop(function() {
mask.unLoad();
});
This code is executed in many places with different purposes, how could I identify which $. ajax AjaxStart's coming?
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Oct 26, 2011
I need an autosuggest/autocomplete script for my field Name.
I search code for that but when I tried it in my webpage it did not work. I used smarty template, php and mysql-adodb.
Is there any syntax that you can suggest for a simple autosuggest the data coming from database?
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May 24, 2011
I accidentally damaged my slide show today and cant work out how to fix it. If you go to [URL] its on the home page. I had only links showing so I added the <ul id="slideshow"> tag and now I have the box coming up but its just blank.
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Jun 21, 2009
I am having some issues running some ads coming from a database not showing up on my page it doesnt show anything at all im not sure what i have done wrong?i cud have it statically written in but it would be easier if i did it that way of getting the urls stored in a database.this is my php code along with javascript code inside my php code.
PHP Code:
include("dbconnect.php");
$rQ="SELECT * FROM banner";
[code]...
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Jan 6, 2011
I am using jquery to create a modal dialog. I am using the following code snippets.
[Code]...
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Feb 1, 2004
I'm working on developing an RSS/RDF/Atom Parser in JavaScript. I've already successfully implemented complete support for RSS 0.9x and 2.0. So far, so good. However, I've run into two minor problems. One is mentioned here, and one is in another post.
The issue that I'm coming across is the case-sensitivity of getElementsByTagName() when parsing standard RSS (XML) tags.
Danny Goodman's JavaScript Bible says that the tag name string that gets passed as the parameter in getElementsByTagName() is case-insensitive. However, this is speaking in terms of HTML and the HTML DOM. I'm working with XML, and getElementsByTagName is handling the XML tags as being case-sensitive.
Can someone suggest a way around this? Can a regular expression be used as the parameter? If so, what would the syntax be (as I'm not very familiar with regex)? For example, I want a <textinput> tag to be handled the same as <textInput> (which is the correct syntax).
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