JQuery :: Check If An Element Matches A Selector?
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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Oct 22, 2010
I was wondering if there is a "selector construct" that matches an element having more than one child. So I'm looking for a solution that doesn't need
an if statement such as;
if($('ul').children().size()>1)
{
//do this
}
[Code]....
But I'm looking for a selector that already looks for these conditions. Kind of like how :has() works but then a check for more than one child.
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Nov 26, 2002
It's to allow users to create thier own descriptions, and the input is displayed automatically using innerHTML. This part of the function checks if the HTML tags are allowed through, I've got this far...
allowedHTML=new Array("<br>","<b>","</b>","<i>","</i>")
HTMLcount=allowedHTML.length
function formcheck() {
lettercount=document.formname.email.value.length
HTMLcheck=""
for(i=0;i<ltrcnt;i++){
if(document.prsnlsd.email.value.charAt(i)=="<"){openat=i}
if(document.prsnlsd.email.value.charAt(i)==">"){closeat=i+1
for(j=openat;j<closeat;j++){
HTMLcheck+=(document.formname.email.value.charAt(j))}
for(k=0;k<HTMLcount;k++){
if(HTMLcheck==allowedHTML[k]) return; else alert()}}}}}
I want it to trigger if one of the "allowedHTML" isn't found by the time it's finished going through the array.
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Sep 7, 2009
I want to set predefined URLs and display some HTML when the URLs are loaded on the page where the code is. Let me give you an example implementation.With forum software, you get one template file that makes up the view forum page. I want to display a piece of code ONLY when someone visits a particular forum. So, I want them to see it when they visit:
[URL]
Not when they visit:
[URL]
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Feb 18, 2010
I need to validate three textboxes and it will validate for numbers. How should I change my code to validate three textboxes?
Code:
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
[code]....
I need to use Javascript to validate 3 textboxes, whereby the users can only key in numbers (because they are phone numbers related fields). If any of the textbox is empty, display an alert message to show which textbox is empty. I do not want to show many alert messages to show that, for example, text1 and text2 are empty, it will show two alert messages. I would need to show one "summarized" alert message instead.Next, check if the textbox matches the pattern (which is to check if it has the skeleton of a phone number). If it is, show an alert message that it is alright. Else, show that it does not match.
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Jan 5, 2011
having a problem with my javascript and I am not getting any errors :(
<script type="text/javascript">
//function disable()
//{
//document.book.day.disbaled="true";
//}
function enableOption()
{
[Code]...
I want the thing to check the year and month for matches and then populate the day all using drop down boxes.
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Jan 20, 2010
I'm trying to determine if the id of an element matches a String that has multiple parts.
Code:
function platformChange (this)
{
thisID = this.id;
[code]....
The value of this.id is "platform_SWFUpload_0_0" but the result of thisID.match (pattern) is null.
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Mar 23, 2010
Let say I have this DOM:
<div id="foo">
<div class="bar"></div>
<div class="bar"></div>
[code]....
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Mar 15, 2010
In trying to select elements that have any attributes, the following throws a jQuery syntax error.
$("div[*]")
Is there a selector to check if a tag has any attributes? Tested with jQuery 1.3
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Oct 20, 2011
I am using the contains selector for one element because I do not know the full ID. Since I only need the first element it finds should I be adding something to improve performance?
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Dec 5, 2011
That's my code:
var main = $("#content_value td:contains('Saque')").next();
alert($("img[title='Ferro']", main).text());
I'm trying to get the img element from the main selector, but it's not working..
[Code]...
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Apr 21, 2011
I need to get the attribute id of the current element which comes from a selector. As I found out with the help of this forum I need to use $(this).attr("id"). Unfortunately this just returns "undefinied" for me. Does anybody have an idea why this doesn't work?
[Code]...
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Jun 3, 2009
This is my first post, I've searched for a solution and thought I'throw this up here. I am passing two elements to a custom function like so:
[Code]...
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Mar 27, 2010
I'm trying to create a new<divclass="line">when an <input type="text"> contained in the last <divclass="line">loses focus.
But new div blocks are created only when the an<input type="text"> in thefirst<divclass="line">loses focus. Please I need help urgently.
[Code]...
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Jul 24, 2009
i have jquery code which highlights <p> elements with specific class. everything works ok but if i update elemet with content including tag <p>, highlighting doesnt work.
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Apr 21, 2010
function GetDepartmentTree() {
$.ajax({
type: "POST",
url: "Service/service.asmx/GetDepartmentTree",
[Code]....
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Aug 3, 2010
I'm using jQuery with Google jsapi and some strange problem occurs:
google.load("jquery", "1.4.2");
google.setOnLoadCallback(function() {
test();
});
[Code]...
When I run this code, alert returns null, not array. The same with any element, f.e. "#element". Why it doesn't work?
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Oct 8, 2010
I'm working with jQuery on a form where each input element is contained in an <li> element.
Some fields are read-only, identified by a class ".readonly", and I'd like to bind a jQuery function to these fields' "focus" event, to send the focus to the next input whose class is not read-only.
But, because of the containing <li> elements, I don't think .next('input') will work, since the <input> tags aren't siblings.
Is there a simple selector that will do the job without having to climb up and down the DOM via parents and children? To me that feels unsatisfactory and brittle, because should the designer decide to change the layout (lists within lists, <div>'s within <li>'s), my DOM-climbing code might break.
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Mar 16, 2011
i have a select box that looks like this for exaple:
<select id="game">
<option id="mario">Mario</option>
<option id="SuperMario">Super Mario</option>
[code]....
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Oct 27, 2010
I'm trying to create an accordion (jquery ui) that shows information about its items when clicked. The information for these items is grabbed from 4 locations:- one to get the item's basic structure info one to populate an 'interoperability' info box where the 'service' and 'about' properties match a box like the 'interoperability' box, but for 'similarity' info a file with user-created 'annotation' information about sub-items that could be shown.
[Code]...
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Jun 14, 2011
I have a single web page that is broken into content sections that are all assigned element id's (home, about, services, and contact) and have a fixed navigation bar that points to anchors associated with each element id / page section. Since the navigation bar is fixed, it comes along with us as we scroll through the page. I've got a jQuery smooth scrolling effect that makes a nice transition between sections of the page when you click on one of the navigation links. Between the sections I have an image that looks cool as the page scrolls past between sections.
Problem:Since the page is kind of long, I would like to use the jQuery .hide method to remove page sections that lie between the current section of the page that is being viewed and the section targeted by the navigation link. At the same time, the .show method will be used to ensure the target section of the page is visible. Therefore, I need to include an exception to the list of elements that I am hiding - the element that I am currently viewing (and is consequently being displayed as the current url in the browser due to the anchor tags).ExampleFor instance, say you're viewing the "about" section of the page and you click the navigation link to the "contact" section. The "contact" link in the navigation bar is assigned the id="nav_contact." When you click the "contact" button, I've made the following jQuery happen:
$("#nav_contact").click(function ( event ) {
event.preventDefault();
$('#contact').show()
[code]....
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Sep 24, 2010
In IE (tested 7 and 8), $('td[colspan]') seems to match every single td. In Firefox and Safari, though, it (correctly) returns only those which do have a colspan attribute. Here is a simple test:
[Code]...
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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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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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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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