Adds Listener To Each Of Relevant Elements Directly
Mar 23, 2011
I'm working on an event driven app, which currently adds a listener to each of the relevant elements directly. I am planing on changing this to use a delegated event method but this raised the following question...Which is more expensive navigating the DOM, or adding event listeners?[code]I need to handle the click event of buttons 'b1', 'b2' & 'b3', a set of these buttons can be found in each 'a1' container but not always in the same nested position. To handle the events I need to know the class of the button clicked and the id of its 'a1' container. Would it be more efficient to:
A ) Add just one listener to the 'main' div, having to find the 'a1' containers id by inspecting each parentNode of srcElement until an 'a1_*' match is found.
B ) Add a listener to each 'a1' container, the id of the container can be easily passed as an argument.
I tried to append a table row to a table by clicking on a button. And inside the table, I put a link so i can click that and remove the row. I was using jquery.flydom plugin, by the way. [code]...
I am using just three components of jquery - Datepicker, Slider and Autocomplete. To download jquery to client machine I use google CDN which downloads two js files which takes time to download and most of the data are not useful for me as I am using only 3 widgets of jquery. I want to download only the part of jquery relevent to my 3 widgets. How should I achieve this?
Below is a javascript function from my website that loops through nodes in an XML file retrieving certain information about those who joined in the current month/year. The part in red creates a link which when clicked runs a function called show() with the relevant i variable value e.g. show(2) for the second node if that is relevant. Anyway the red part works in Chrome but not Internet Explorer (surprise surprise). I did some research which says that .setattribute is not allowed in IE. How can I change the red code to create links for the relevant records which works in IE?
i need to add another "li" element to a list. The "li" should be with 0 indentation. When I statically write it (HTML/CSS), with ul/li margin/padding 0 - it looks great. When I dynamically add it (Javascript) - in IE (and not FF) it's ALWAYS indented, no matter what!!
This is my javascript code: var newLiElement = document.createElement('li'); newLiElement.style.padding = Ɔpx' newLiElement.style.margin = Ɔpx'
List.appendChild(newLiElement);
newLiElement.parentNode.style.padding = Ɔpx' //even tried to update the "ul" father node newLiElement.parentNode.style.margin = Ɔpx'
Even though - the div in IE looks like this:
List Header first li second li
But in FF the div looks like this (and this is the right scenario): List Header first li second li
I event tried to define a new class with padding and margin 0 and use newLiElement.className = 'no-padding-maring-class-name' but it's still indented in IE.
I have a three textboxes in a form. Using OnBlur, I am attempting to call a function to add one to an input textbox to add 1 to the cost.As the user enters text into textbox01, the number 1 appears in the input box about cost, as the user enters text into textbox02, the input box displays 2 and the user enters text into textbox03, the input box displays 3.
My JavaScript is as follows: <script type="text/javascript"> //copies contents of first textbox to second textbox
I have a google script i paste in my web page. But when users click on the adds, it redirects the same page to the adds.How do i enable them as popups ?Here is my script below
<script type="text/javascript"><!-- google_ad_client = "pub-7975590523545723"; /* 728x90, created 06/01/09 */
For some reason, when i split a basic string in IE I'm getting an extra value in the array which is something like this:
function(v,n){n = (n==null)?0:n; var m = this.length;for(var i = n; That's the actual value. Here's the call I use: var value = "test@test.com, test1@test1.com";
I have been trying to write a script that allows a user to click on a button like a plus sign to add an additional field for a phone number when they have more than one phone number to enter. I have created a script that sort of does this. It doubles up what is already there, so, the first time, everything is fine, but after that I get a lot more fields than I want. I am a php programmer and not familiar enough with javascript to get to what I want. My script is included below. What I am doing here is retrieving the html content and then adding it to what is already there. In php I would use an if conditional test to see if the data has been retrieved. The first time it would retrieve the data into a variable. After that it would not retrieve it. I think I am getting into some scope and sequence issues here. Javascript is a bit different than php in these regards.Also there is a commented line in the code that asks another question about the use of variables that I don't understand.I also tried using appendChild() here to no avail. I couldn't get that to work at all.
I've got a really simple function I want to create, a confirm delete function that is applied to all links with a class of delete. A confirm message appears when the link is clicked, returning false if cancel is clicked.
This is my code and for whatever reason that I just don't get (coz I'm a bit confused by all this stuff), clicking cancel when the confirm message appears seems to return true regardless. Code:
I am trying to use a code snippet fromthe code works fine however what I want to do is modify it so that when the user clicks the link to add another entry their would be a drop down <select> box to the left of the text input box. Which I have working but each time the link is clicked to add a new <select> and text input box row the previous <select> dropdowns seem to loose their values and only the text input boxes keep their values. So I am not sure where/how to edit my below code to work properly
Code: below javascript controls the functionalty of the script var arrInput = new Array(0);
To put things short, I just started with Ajax and was abel to update categories without reloading whole page. I even was abel to add the new categori to the drop down menu of categories. The problem comes when I try useing the new option.Now to expand on this. I have something like.
Code: var optn = document.createElement("OPTION"); optn.text = document.categoryForm.category.value;
I am trying to write a script that allows a button in an iframe to change the value of a variable that is in the parent page. I then want to have an if statement in the parent that will change the url of the iframe ( or even change the url of the parent)Here's what I have for the parent:
My page is not displaying correctly in Internet Explorer. Its displays properly in all other browsers.
The issue: Internet Explorer
When the page is loaded-- Internet Explorer places DIV tags between the the <LI> elements on my page and in other areas of the controls which have been dynamically added to a placeholder on the child form during page load. The first <UL> element on the list has an ID assigned. The java-script functions correctly on the first <LI> element but does not get to the rest as <DIV> tags have been placed between them breaking up the nodes.
Opera, Safari, Chrome and Firefox load these controls without separating the elements with additional DIV tags. They remain grouped together and display as intended. As they remain in the proper UL container my Java-Script can collapse the list as designed by getting the child elements of the UL.
I am writing a Javascript UI component. I have already written a "disable()" method for it, but I would like to go one step further in order to make my component as compatible with existing HTML controls as possible.
With standard HTML controls we can do this: myTextField.disabled = true; and as soon as this property is set, I assume there is a property listener of some kind that is invoked to change the appearance and value etc of the control.
I want to write my own 'property listener' to do this with my control. Can I do it in Javascript or is this too "low level", requiring code at the browser implementation level?
How do I add an event listener to a few text boxes that prevents the user from typing anything but digits. I use the numbers entered in the text boxes in calculations afterwards so I don't want the user to enter "one" instead of "1" etc... Also, the range of possible numbers is too big for a drop down menu.
I'm writing a custom script to collect attributes from links and concatenate them to pass as a string to another function. I'm using a readily-available 'addListener' function so the click event doesn't overwrite others on the page. All this seems to be working in all browsers except IE6, and I suspect it may have something to do with event bubbling. Can anyone see my errors and any other ways I could improve the script? Code:
