Checking For Null Value?
Jun 18, 2010I need to check to see if a cookie has been previously created:
var startnum = readCookie('a1');
if (document.cookie.indexOf('a1') == -1){
var startnum = "0";
[code]....
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Checking That Array Is Null
Jan 18, 2011I am using the following script on an e-commerce site to ensure that not both drop downs cannot be selected at the same time, as well as ensuring one must be selected at all times.The problem with this code is that not all of my product pages have these 2 drop downs so I wanted to try and add in an if statement saying that if id2=9999 and id3 == null then pop up the error. That didnt work because I don't think it can be equal to null if it does not exist on the page. I tried to assign id3 a value of 99999 so that on pages that it doesnt get reassigned after (i.e pages it does not exist on) it will still be equal to 99999 and pop up the error according to the second if clause.Unfortunately that did not work either. Is there any other way I can do via javascript?
View 7 Replies View RelatedChecking XML Node For Null Or Undefined?
Aug 10, 2009im having a little difficulty checking if an XML node has a value, here the code:
var Divs=new Array("artist","bio","img","date","tickets","venue","street","city","country","headliner");
xmlDoc=xmlhttp.responseXML;
for ( nodes in Divs )
[code]....
This always throws up the error: document.getElementById(Divs[nodes]) is null ive tried putting the xmlDoc in a variable then checking if its null but no luck, also tried the same method against "undefined" but no luck either.
Hide Iframe Checking If Src Is Null Or With Address?
May 24, 2010<div class="check">
<iframe src=""></iframe>
</div>
[code]....
Null Is Null Or Not An Object Swfobject
Jul 30, 2011I 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
View 2 Replies View RelatedIE6 Error 'null' Is Null Or Not An Object?
Feb 3, 2010I'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
Null Variable - Error: "cobj1 Is Null"
Feb 26, 2009I put a long script but the problem is small.
var book1 = bobj1.value;
var chapter1 = cobj1.value;
var verse1 = vobj1.value;
var book2 = bobj2.value;
var chapter2 = cobj2.value;
var verse2 = vobj2.value;
[Code].....
I don't know if this is written properly: if(bcv[a]!= ""){ The reason this is happening is because the error shows: Error: cobj1 is null Source File: [URL]
'null' Is Null Or Not An Object?
Jun 20, 2010My code is in the attachment alex.txt.When i press the button for first time it gives me error: 'null' is null or not an object. But when i press it again or refresh the page and press the button it gives me the result that i expect.When i change the var pdbfile1,2,3 values(for example with 2x4n;3gis;1crn) and press the button again there is the error again and i have to refresh the page again.
View 7 Replies View Related"'null' Is Null Or Not An Object" For Slideshow
Jan 20, 2010We are trying to use some javascript for a slideshow and are getting the following error message in our browser.
Unfortunately, we only have basic CSS and HTML knowledge. I was hoping the error might be an easy fix for someone on this forum.
The code is as follows:
What changes need to be made to this code?
Mootools.js IE 8 "null" Is Not A Null Or Not An Object
Oct 5, 2010I'm not to familiar with js but I'm having a problem with, mootools.js in IE 8 "null" is not a null or not an object line 8, 13, 59
Parts of my site are not showing up and this just started happening.
[url]
GetElementById Element Null - Error Stating "getElementById("ballElement") Is Null
May 31, 2011I 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]...
JQuery :: If Data.verMailDate Is Null - "",not "null" ?
Sep 10, 2009$.getJSON('/VersionQueryJsonAction',{verID:verid},function(data){
if data.verMailDate is null,i need it is "",not "null",.
Checking Parent's URL ?
Jul 23, 2005How can i check parent's URL from a child (popup) window ? and how can i
refresh it if the URL is say http://www.xxx.com/?
Image Checking
Jan 9, 2006I have some javascript that uses setInterval(..) to change the src of
an image every second. Is there any way of programmatically checking to
see whether an image is loaded properly or if a 404 File Not Found
error occurs for it?
Argument Checking
Aug 8, 2006Does anyone have any coding rules they follow when doing argument checking?
When arguments fail during check, do you return from the call with an ambiguous return value, or do you throw exceptions?
Checking For Value Of Text
Jan 4, 2006I have the following:
<script language="JavaScript">
<!--
window.onload=function (){
var pwinput1 = document.getElementById("tfOtherJobTitle");
pwinput1.onkeyup= function(){
if(this.value = "test"){
document.getElementById("pbRegistration").disabled=false;
}
}
}
</script>
for a button called "pbRegistration" that checks to see if the value of textbox (tfOtherJobTitle) equals "test" and on completion of the typing "test", it enables the button. Why isn't it working?
Checkbox Checking...
May 2, 2006I have a form that produces a few checkboxes via a server side script. Once on the page, the source looks like this...
<tr>
<td><input type="checkbox" name="access" value="1" checked /></td>
<td><input type="checkbox" name="view" value="1" checked
/></td>
</tr>
<tr>
<td><input type="checkbox" name="access" value="2" checked /></td>
<td><input type="checkbox" name="view" value="2" checked
/></td>
</tr>
...what I'm trying to do is pass through the value of the checkbox
ticked through to a function. This function will then, depending on
whether the box is ticked or not, untick the access# checkbox.
I can pass the number through to my function, but I'm having
difficulty trying to reference the actual checkbox from the script.
This is what I've got so far...
function AM_MenuSelection(opt) {
var myOpt=document.frmNew.view[opt].value;
alert(myOpt);
}
As you can see, I can reference the value of the object, but need to
be able to access the related access# object.
Checking Next Element
Sep 27, 2006I'm trying to run some code when a H2 element is clicked on an unordered list below it. The problem is, the code runs whether the h2 has a ul below it or not.
h[x].onclick = function(){
var ul = this.nextSibling;
while (ul.nodeType != 1){
ul = ul.nextSibling;
}
So, if I have something like this:
<h2>Subtitle</h2>
<h2>Subtitle 2</h2>
<ul><li>List</li></ul>
Clicking "Subtitle" runs the function on "Subtitle 2". I don't want the function to run unless the next element is an ul. How can I verify that the next element is an unordered list and if not, don't run anything?
Float Value Checking?
Mar 23, 2008<html>
<head>
<script type="text/javascript">
[code]....
Checking To See SVG Is Supported?
Aug 3, 2011I'm using jQuery SVG and would like to check if the browser that the person is using will support SVG --- if not, they'll receive a polite message; is there anyway to check this using javascript?
View 2 Replies View RelatedChecking X Days Out
Aug 5, 2003I need some JS code that will let me check and see if the date the user enters is within certain guidelines. ie...(no less than 2 days out and no more than 90 days out.)
Someone was kind enough to give me this code, but I can't get it to work correctly. Everything always returns false. If I am reading this write, if it returns false, then the conditions are not met.
Any ideas?
function compareDates(myDate, min, max)
{
var now = new Date().getTime();
var then = new Date(myDate).getTime();
var diff = (now - then) / 86400000;
var valid = true;
var min = min * 86400000;
var max = max * 86000000;
if (diff <= min || diff >= max) {
alert(diff + " " + min + " " + max);
return false;
}
return valid;
}
new compareDates("08/10/03", 2, 90);
Form Checking
Apr 1, 2005I'm building a site that requires user registration, I've already built myself a PHP based user registrationg system, and it already has all the usual checks that are required before letting someone sign up (i.e. that the username is unique, that all required fields are filled, that the two passwords match, that the email address is valid, etc..) using PHP, and so I could ship the system as it is.. but.. I wanted to add some JavaScript checks to it aswell (just to be sure, and to save processor power, etc.. you know how it is). Code:
View 4 Replies View RelatedChecking All Boxes
Jul 26, 2005I have a function that works fine if there is more than 1 check box on the form. If there is 1 only then it will not check that box.
function set(n) {temp = document.EquipMaintForm.multiFilterId.length;for (i=0; i < temp; i++) {document.EquipMaintForm.multiFilterId[i].checked=n;}}
Does anyone know why this could be?
Password Checking
Nov 2, 2006I am creating a website where I have to check the password that will be either in Upper Case or Lower Case or Numeric. Can you please tell me anyone that how I will do it by javascript.
View 4 Replies View RelatedChecking The Value Of Textbox?
Oct 16, 2011I am having 3 textbox where I want to validate them.My first validation is that the house number should not be > 4
Code:
if (document.myfom.house.maxLength > 4)
{
[code]....
JS - Checking A File Update
Jul 23, 2005I have a site with a news pages and I'd like the navigation to include a
blinking 'NEW!' when that page has been updated within the last three days.
It works fine for the one page (if you're on the news page, it works great)
but I can't figure out how to check the time/date stamp on a file other
than the one currently loaded ...