JQuery :: Check That Certain Element Does Not Exist?
Mar 14, 2011
I am dynamically creating CheckBoxes DropDoenlist with certain set of values of not all of then are created any time.But in Script i want to get sure whether that element has been created or not. So how can i check for radio button list and dropdown list.Below is the code for my dynamic list creation:
sbp1+="<select id='locationOption' class='reg_select'>";
sbp1+="<option>Location one</option>";
sbp1+="<option>Location two</option>";
[code]....
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Oct 27, 2009
how can i check if a DIV with the ID xyz exist?
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Nov 29, 2011
I want to insert a new li item in a list only if this item no already exist. For example:
<ul id="myList">
<li>Item 1</li>
<li>Item 2</li>
</ul>
Available insert "Item 7" but not "Item 1" for example. I´m trying so crazy statements like this:
Opt 1)
var ListItems = $('#myList li').find('Something');
Opt 2)
[code]....
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Aug 23, 2007
Let's say that I have generated var SomeVariable = true; from server.
On client side I have:
if (SomeVariable == true) {
do something
}
How could I first check if my variable is undefined? Or how can I say if
some exception occures please don't report error, just continiue?
If variable is not generated from server, it will report me an error..
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Jun 3, 2009
When i select a file (through html file control) from local machine, before uploading i want to check if the selected file exist(because,after selecting and before submitting the form,user may change the name/delete the file from the source). so after selecting the file, i need to check the same file exist as it is using javascript/ajax. Back end is JSP.Eg: Am selecting abc.jpg from my system and changing the file name form the source as abcd.jpg, now abc.jpg does not exist. But i want to check if exist. If selected file does not exist, i want to display a message before uploading/submitting the form.
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Jun 22, 2010
var myarray=new Array(4)
for (i=3; i <7; i++) myarray[i]=new Array(8);
for (i=3;i<7;i++) {
[code]...
Here is my code and i want to check if the cell exist and if it is true to take the content of the cell. But it gives me an error in the 6 line(which i believe is wrong):
Message: Object doesn't support this property or method
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Feb 18, 2011
So I have an web application deployed on tomcat. That application is a document browser[URL] that renders some html pages. In one of those pages I will have a svg that will change some colors if some files are/are not deployed in the server. So I am trying to create a javascript function that open that file. The code I am using is this:
Code:
<script type="text/javascript">
var xmlhttp=false;
/*@cc_on @*/
[Code]....
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Mar 23, 2011
iframe Info: id="AssessmentsIFrame"button Info: id="wpv_1266351"
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May 9, 2011
I have a menu that I have constructed through HTML/CSS/JavaScript. Javascript handles the mouseover and mouseout events to set the background of the menu item/table element with an image. It works great. What my issue is right now is that when the user loads the Home page, I want that to have the background of the item already set. I had a function to do this with a switch clause in a separate javascript file. This function was called immediately (left it outside of any functions so it would execute first). But I'm getting an error because the actual element (a table) to set the background doesn't exist yet.
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Jul 9, 2010
jquery i have a problem like
$(document).ready(function(){
$("dd:not(:first)").hide();
$("dt a").click(function(){
[code]...
my code always call when i click "dt a" but i dont want like this. i want like that if i click element visible don't do anything. my code call when i click element "dt a" unvisible.
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Nov 26, 2010
Is there an easy way to check if there is an element anywhere in the DOM with the class 'ui-selected' ?
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Jun 5, 2009
how I can implement the following using jQuery 1.3 and whatever plugins may help. I need to insert an iframe or img that links to an external resource onto a page, and if that iframe or img does not load within a certain period of time, remove it and insert one that links to a local resource instead. how to check if the iframe or img is done loading.
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Jul 9, 2010
is there any way one can test if an element matches a jQuery selector? I'm not trying to locate elements, just test for match.
More specifically, when using event delegation and a common callback function for multiple events, is there a way to check the event's currentTarget against a selector?
In the following example, how can I check if the currentTarget is the LI node with class "item2"?
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
</head>
[Code]....
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Aug 3, 2009
I'm building a website with JQuery. Now I need to check if an object is shown, with show()
My jqeury to hide all the elements at start:
[Code]...
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May 28, 2011
I have this piece of code:
$('.selectorheader').siblings('div').hide();
$('.selectorheader').click(function(){
$(this).siblings('div').each(function(){
[code]....
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Jul 1, 2011
I have the list structure like this [code]...
My problem is
If I click on link which has ID ArtechGallery and which belongs to menu1 list
If I click a link which has ID HPGallery and which belongs to menu2 list
So, then, how to check whether the clicked element belongs to Menu1 or Menu2 ?
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May 29, 2010
I would like to know how to make an element Loses the Focus and How to check if it is focused or not?
cause after someone clicks in the search button I want it to lose the focus in the Text Input
and I want to check if its focused.
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Jul 22, 2010
I have two multiple selects on my page. One gets updated via ajax whenever the user filters data (we'll call that select "#select-1"), when they select options from that it then gets moved into the other select (we'll call that "#select-2"). That is all working fine but I'd like to refine it so that they can't select the same data twice.
So, basically, what I'd like to do is add logic within the ajax call to only update the select options in (#select-1) if it does NOT exist in the other select (#select-2).
I have no clue where to even begin with this....do I need to store the val's in an array and then search for each one in the other?
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Nov 3, 2011
I have a page with two divs on it, <div id="left"> and <div id="right"> . On my page, there are times when the right div is not displayed as there is no content in it, how can I get jquery to detect that div id="right" does not exist on a page so make the width of the left div to 1200px.
This is what ive found, but im not sure length is what I should be using to calculate if a div exists or not:
[Code]...
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Jun 18, 2010
So I'm new to jQuery and loving it! I just got stuck on a problem that I'm not sure how to work around. I'm trying to add a class to a li item in a navigation if it has child list items underneath it. For example,if I have this situation:
[Code]...
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Jul 26, 2010
In the examples for live() and delegate(), the selectors match at least one element that already exists. Will either of these commands work on elements for which there is no match at all on page load?
In my case, I want to bind a keyup event to the textareas that jeditable creates. I could probably create custom plug-in (to the plug-in :) to do the job, but I'd like to use live or delegate if they would work.
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Mar 30, 2010
If I have a form like so:
<form>
<input type="text" />
</form>
[code]....
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Dec 8, 2011
I'm writing a blackjack game for class,it generates two random numbers that select from a switch statement that creates a string file name of a card e.g "AceDiamonds.gif", it then fills an array deck[] with these strings,I want to fill the array with the full deck of 52 cards,and not have any duplicates, how do I check the array for an existing element remove it and replace with another card not in the deck??
Code:
<script>
var dealer_hand = new Array();
[code]....
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Jul 20, 2005
how can i check if file exist in current directory (in javascript)?
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Aug 21, 2011
I am trying to run 2 different scripts on a page, both of them work fine independently, however, when both of them are running, one of them refuses to work.
This is the page: [URL]...this is what the client wants!!) The menu on the left is supposed to have a flyout element, but that doesn't work when the falling leaves are working.
This is the menu script:
startList = function() {
if (document.all&&document.getElementById) {
navRoot = document.getElementById("nav");
for (i=0; i<navRoot.childNodes.length; i++) {
[Code]...
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Feb 18, 2010
I am using AJAX + JSON to construct a HTML code, which physicaly does not appear on my page, but after is created and put in a variable I display it with innerHTML. Then with another on e function, I tell some of the <tr> to get style.display = 'none', which is working properly! Then I want to check which of them are currently invisible an d for that purpose I use:
Code:
for (p = 0; p < rows.length; p++) {
if(document.getElementById(rows[p].id).style.display == 'none') {
alert(rows[p].id);
}
}
where rows is a define array with getElementsbyTag with all the <tr> - s. Then what happens is really strange - I am getting alerted ALL the <tr> ids, including the currently visible, and, then they dissappear, (as if I have told them to make them style.display = none, which I haven't)!! I have tried also with currentStyle instead of style, but the effect is the same.
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