Anyway clever ways of checking whether an object is a nodelist in IE. There appears to only be two properties item and length.This is what I'm working on
Code:
// Some weirdness in IE regarding nodesList and typeof 'item' returning 'Object'
// even though when alerted it returns 'function (){...}'.
[code]....
I've been working on a function to convert nodeList and object properties to an array. The first question is with regards IE and checking whether the object provided is an HTML collection. The best I have come up with so far, is to test if it's an object, has an 'item' which is a function and has length. The second question is with regards slice.call and a while loop copy. I guess I need to do some profile/timing tests, but I'm wondering if the function merits a slice.call? or should I simplify?
Code JavaScript:
// Some weirdness in IE regarding nodesList and typeof 'item' returning 'Object'
// even though when alerted it returns 'function (){...}'.
// Therefore having to use regExp.test() to check whether it's a function instead.
// Note: _isNodeList isn't full proof. An object with the properties
[Code]..
I've often write javascripts that use this rather common code to get all tags in an XHTML document:
var alltags = document.getElementsByTagName('*')
... and then use a for loop to access the elements as an array, for example:
for (i=0;i<alltags.length;i++) {
elementClass=alltags.className
[i]Do stuff
}
This has always seemed to work in the past, but I recently learned that the getElementsByTagName method returns a DOM NodeList, not an array. I'm currenly working on a project that needs to access the children of an element conditionally upon its class.
I have three questions. First: How do I declare a global variable to be a DOM NodeList object? It wouldn't be assigned until called from a function, so something akin to var elementList = document.getElementsByTagName() in my global declarations is out of the question. Is there something like var elementList = new NodeList() in javascript? (I know that I can assign it in a function without the var and it will be global, but other people may have to work with this code, and I'd like to have it clearly declared at the head of the program.)
Second question: Assuming alltags is a NodeList returned from a getElementsByTagName call, which of these is proper? This:
childElements = alltags[i].getChildNodes()
... or this:
childElements = alltags.item(i).getChildNodes()
And finally, which of the above techniques has better browser support?
I'm developing sort of a do-all javascript required form field check (which was developed long after the pages were developed). It uses a lot of getElementsByTagName so it's creating several NodeLists. One of these nodelists contain all the divs, those showing (display:block) and those hidden (display:none). The function checks only the divs that are visible.
This is my first experience with NodeLists so the first thing I tried was removeNode() on the hidden divs. This doesn't work because when you return with required field errors and try to make the hidden fields appear I believe there are errors because the hidden divs were removed from the DOM.
I've tried a few other work-a-rounds but it's getting to be afternoon and I'm turning to you guys for help! Is it possible for me to just skip forward to the next Node in the NodeList? I've tried nextSibling but I guess I'm calling it on the wrong Node.
I have a function were the input parameter can either be an
string,array,dom node or NodeList (getElementsByTagName()) and I have
somthing like this function which works great for what I want in every
case except if the pNd is the NodeList at which point I end up with the
nodeList in the first element of the array instead of acting like the
array would.
function doSomething(pNd){
if(pNd.constructor != Array){pNd = new Array(pNd)}
return pNd
}
So my question is how is there any easy way to figure out if pNd is a
NodeList ? When I use pNd.constructor on NodeList all I get is [object]
I need to add an event for all elements that are not text entry.I have tried this
$(':not(input:text, input:textarea)')
$(':not(:text, :textarea)')
I tried to get it to work for just not type=text
$(':not(:text)')
$(':not(input:text)')
I can't seem to figure it out.
I have to change text input type to password input type and i am using jquery script. This script work for FF, Chrome and Safari browser but not worked on ie7, ie8.
Script is as:-
How can i update my script, so that it works cross the browser.
How 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/?
I 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?
Does 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?
I 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]....
I 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?
I 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.
I'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?
<html>
<head>
<script type="text/javascript">
[code]....
I'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 RelatedI 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);
I'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 RelatedI 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?
I 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 RelatedI 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]....
I 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 ...
I'm trying to check whether a string is all digits. This part is
easy:
function allDigits( str ) {
var foo=str.split( '' ); // better than charAt()?
for( var idx=0; idx < foo.length; idx++ ) {
if( !isDigit(foo[idx]) ) {
return false;
}
}
return true;
}
I'm not sure about how to implement isDigit(). Is this the best way?
function isDigit( s ) {
if( s.length > 1 ) {
return false;
}
var nums=﾿?'
return nums.indexOf(s) != -1;
}
I have inherited a project with some code that runs fine for some
frames but not for others. This is a frames based project, and
(apparently) sometimes there is a parent frame, and sometimes not. When
there is no parent frame, you see this error message:
'parent.frmUpper.document' is null or is not an object
I would like to know if there is a way to check for the existence of an
object by name so I can determine what to do next.
i am declaring an array in javascript
var a = new array();
now before assigning a value to the ith element of this array, i have
to check if some value has already been assigned there. But at the
time of defining array, it gives undefined values to the array. Is
there a way/function, thru which i can find, whether a particular
index value was assigned before or not.
Is it possible to check for the existence of an element? I have a dynamic
page which may or may not have a <div> holding a bunch of thumbnails, and I
want a function to check for the existence of the <div>. Doing:
blah = getElementById("thumbnails");
Generates an error.... I was hoping it would just return false or
something... Is there a way of doing this?