Can An Onchange Eventhandler Be Re-used By Invoking Rather Than Clicking?

Jul 20, 2005

I'm trying to call/ mimic an onchange function/ event after a user has
clicked a checkbox. In response to which a buncch of other ones need to be
checked as well.

The caveat is that each of those child-checkboxes need to have an onchange
action take place. All of these child-boxes *have* got a working onchange
eventListener attached (thx to an old post of Lasse Reichstein Nielsen).

Following a snip that suggests (or so the debugger suggests) that the
inputElement.onchange is void, so calling onchange becomes a bit hard.
Any suggestions?

inputElement = _row2checkbox[tb.rows[i]["id"]];
inputElement["checked"] = el["checked"];
if (inputElement.onchange) {

I did come up with a work-around but that ivolves some serious trickery.

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JQuery :: Changing Text Field And Invoking The Onchange Event?

Mar 16, 2010

I have a text field on my page, whose value I am setting through the jQuery cal


However, when I normally type into the text field, certain events occur as the text field value changes. These events do not occur when I set the value like above. So my question is, after I set the value, how do I invoke any onChange handlers?

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Invoking OnChange Action When Programmatically Changing Checkbox State

Feb 1, 2010

I'd like to know if it's possible to invoke associated onChange action of check box when changing it's state with another javascript command... ie.

<input type="checkbox" name="y" onChange="javascript: func('var');">
document.x.y.field[i].checked = true;

When I execute last line I'd like func('var') to be run as well. Unfortunately it doesn't happen as of in the example above.

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Disable EventHandler Such As Onblur

Jun 20, 2011

I have to take this class online and it requires that I sit for 45 minutes if I start to do something different say go on Facebook in a new tab it stops the timer... I use Google Chrome as a web browser and was wondering if there is anyway to use the console to remove the Window.blur trigger

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Two Eventhandler For One Input Form Fields?

Nov 26, 2009

-i have two drop down menus. -each drop down menu has its on event handler "onchange=doSomething()"

-i want to call yet another eventhandler to the same drop down menus "onchange=doMath()"

my question is, can a drop down menu perform two different events?

of should i combine these functions. i tried combining them, and i lost the purpose of both functions.

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JQuery :: .select & .focus Within An Eventhandler (firefox)?

Feb 18, 2010

I know there are some issues trying to use .focus() and .select() within another.eventhandler (for the same object) in firefox. What I don't know is, howto workaround?

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JQuery :: AJAX Request Loads A New Element - New Element Without Eventhandler

Sep 24, 2010

If I generate a new element via AJAX, jQuery don't listen to events at this element. I read that live() how to use this function together with post().

That's what I have:

$(document).ready(function() {
$.post('products.php', $('#products_form').serialize(), function(returnData) {


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Invoking A Method When I Have It's Name As A String

Jul 20, 2005

I'm trying to figure out how to invoke a method on an object given the
object and the method name. For example, here's a simple object with a

function MyObj (pName, pDesc) { = pName;
this.desc = pDesc; = function() {
return + " - " + this.desc;

and here is some sample code to manipulate it.

var o1 = new MyObj("nn", "dd");
var s1 =;

The assignment to s1 invokes the foo method and gets back the string "nn -
dd" as expected. now I try to find the foo method by it's name:

var funcName = "foo";
var theFunc = o1[funcName];
var s2 = theFunc();

the assignment to s2 invokes the function OK, but not in the context of the
object. can someone tell me how to invoke a function as a method?

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Self-invoking Modules Error Out In IE6/7?

Oct 9, 2007

I have a grouping of private/public functions defined under a namespace like so:

var Effects = function() {
// private variables
var shades = new Array("#ff9", "#ffa", "#ffb", "#ffc", "#ffd", "#ffe", "#fff");
var blindInterval = 20;
var skipFactor = 19;
var highlightInterval = 200;

// private methods
var fade = function( id, idx ) {
var resize = function( id, queue ) {
var getHiddenHeight = function( id ) {

// public methods
return {
highlight : function( id, interval ) {
blind : function( el, skip, interval ) {
toggle : function( id ) {
zebra : function( id ) {

From mozilla, I'm able to do what's expected by calling the functions like: 'table-1' )" but in IE6 and IE7 I get a "Effects is not defined" error. That's puzzling to me, since they're both defined through a var Effects = function(), and the function itself is self-invoking.

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Wrong Variable Invoking

Jul 17, 2007

function agregar_row(){
for (i=0; i<10; i++){
row="row/" . i;
if (document.getElementById(row).style.display=='none'){
} }}

This function is intended to make visible a row, just one by each time the function is called. the way im invoking "(row)" is wrong, i think...

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Invoking An Animated Gif At Random Intervals

Jul 23, 2005

I want to make an animated gif that runs through one loop
and then stops. But I want to invoke it at random time, for instance, a tight head shot
of a person's face winks at the viewer once or twice per minute,
at unpredictable intervals.

I think I could figure out how to use rand() and setTimeout(...)
to create the random time intervals, but I'm not sure about
how to start the one-loop animated gif. Would I have to reload
the whole page? Or is there someway to restart the gif animation
*without* reloading the whole page?....probably not, the more I
think about it.

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JQuery :: Method Is Not Called After The First Invoking At IE?

Jun 14, 2010

drop: function() {


The above code works fine at Firefox and Google Chrome. And it works at IE 8 for the first drop action. The ajax method is not called after the first call although the append still works.

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Anything Better Than OnChange - User Changes Information In A Textbox As Appose To What OnChange Does?

Jan 28, 2011

Is there something that will update as soon as the user changes information in a textbox as appose to what onChange does, which is update once the focus has been taken off of the textbox? I am writing a custom cart and I am using AJAX to update the price according to how many they are ordering, I was hoping to have it update the price as soon as the user put in the volume, but it doesnt update until the user clicks somewhere else on the page.

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Invoking A Directory Browse For File(s) Download

Jul 23, 2005

I have a number of image files that have been pre-selected by the user
for downloading. I'd like to be able to have the user click a button
and have a directory browser pop-up window available for the user to
select the directory into which the image files will be downloaded.

I thought that this would be simple to find but...

If this is possible I further need to know:

1) how to access the directory path string (which will be used to
download the files)

2) how to set any available default values for the directory bvrowser.

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JQuery :: Invoking A Function On An Event W/o Inlining?

Feb 4, 2011

I'm just getting started and I went over the initial tutorial. I created an HTML page like this:

<!DOCTYPE html>
<html lang="en">


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Invoking Code Depending On Return From Function?

Jun 3, 2010

:)Per JMRKER's suggestion I researched Query Strings and partially solved my original request on how to pass a parameter. Now I need to learn how after passing that parameter, how to invoke some code.In an html file I call the program listed below entitled "ShirleyLee.html". The call is initiated by the following statement: onclick="'ShirleyLee.html?Player=WindowsMediaPlayer'"In the body of ShirleyLee.html I call a function in the <head> entitled "DeterminePlayer". This function will parce the url used to open ShirleyLee.html.I tested this code and it works. In the Javascript code located in the <body>, the If clause: "if (SplitQueryStringStoreInArray[1] == "WindowsMediaPlayer")" will trigger the Alert box which will then display "WindowsMediaPlayer" which was parced from the url in the DeterminePlayer function located in the <head>If you look further down, just below the function call in the <body> you will see 11 lines of code which is a table that is comprised of the code neccessary to utilize the Windows Media Player plus parameters.

My question is, how do I invoke this code in the true area of the conditional clause located in the <body> that now temporarily contains: "alert("Player = " + SplitQueryStringStoreInArray[1]);"The following is the file: "ShirleyLee.html"

<script language="javascript1.2" type="text/javascript">


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Invoking Lotus Notes Client From A JSP Page?

Jan 19, 2011

currently we are having a scenario wherein in a JSP page we invoke the Microsoft Outlook client (open the Outlook client) using ActiveX api.. This we are doing using a java Script function which is called when the JSP page gets loaded. The body of the email is pre populated in a HTML format when the Outlook client opens up.Now we have a requirement wherein we need to open up the Lotus Notes client in a similar way ..Could someone please advise/help how this could be achieved ..whether there are some standard api's which could be used here.

2. Also in case there are 10 users who are using microsoft outlook as their email client while the other 10 users are using lotus notes for emailing..then in this case how could this be handled..

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OnChange Without Appending OnChange Directly To Element?

Feb 10, 2010

Can I target the element and base an onChange outside of directly calling it in the element tag?

Due to the nature of my script, the best I can do is wrap a tag around the element.

example of what I am trying to do



document.form.field1.onchange = function();


And if this might work, can I call it in the head or must it come after the element.

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Ajax :: Client Object Method Invoking With Parameter?

Dec 14, 2010

Inside client control I generate a button, with script to run.I want to call object's Print() method when this button is clicked, the result value must be passed to Print() as well.How can I do that?This is my object:

CustomControls.FirstObj = function(element) {
CustomControls.FirstObj.initializeBase(this, [element]);[code]....

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Variable Scope - Anonymous Functions And Self Invoking Closures

Jul 25, 2011

I think the last thing people seem to learn about in JavaScript when they're not coming from other programming languages is variable scope. Some even get all the way into AJAX without having learned about scope, and this is a time when it's really needed. Although the scope of JavaScript variables is non-complex by nature, it's something we should all get a full understanding for before we move too far.
Section 1: What is "scope"?
Section 2: The "var" keyword
Section 3: The "this" keyword
Section 4: Closures or "Anonymous functions and self-invoking closures

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JQuery :: Invoking A Function On Daily Basis Automatically In An Aspx Page?

Mar 10, 2011

Actually it has been just 3 months i started using JQuery and its whole lot exciting with the things we can do using jquery. Is it possible to call a javascript function inside aaspx page created in sharepoint designer on a daily basis automatically .

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JQuery :: Invoking JqmHide On A JqModal - Convert A Thickbox Iframe Setup To A Div

May 29, 2009

I'm trying to convert a Thickbox iframe setup to a jqModal div. While I can load content into a jqModal dialog. I run into a problem trying to explicitly close the dialog. Per Firebug:


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JQuery :: Attaching Methods To Identical Forms, But Only Invoking The Method On The Current Form

Sep 16, 2009

I have a form that is repeated through out the page by the backend, which I have no control over.

<form action="">
<textarea class="your_comment" rows="10" cols="70">

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Stop Users From Double Clicking On The Page Or Disable Double Clicking?

Sep 3, 2009

I have a page that submits to a db then re-loads its self with new information. Unfortunately it goes wrong when the user double clicks on a one of many text links that provides the info for the display on reload. How do I stop users from double clicking on the page? Ideally I think I would like to call some sort of js function from body onload as I presume this would then cover the whole of the page, but have no idea if this is possible or how to go about writing it.

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Invoking Function Throws "Object Expected"?

Jun 19, 2009

My very simple function clickEvent1() (defined in the page head) that expands/shrinks a hidden tag <h6> with text, id="lignep" in the body

Here is a code which throws error for line 104 in the page body with message "Object expected", but I can't figure out what is wrong in this line that calls for function clickEvent1():

<h6 id="ligne"; onClick="clickEvent1()"; style="font-size: 12pt; line-height: 130%">

Here the page with Javascript in the title:

<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:offic... xmlns="">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">


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Clicking A Button To Make Something Appear, And Then Clicking It Again To Make It Dis?

Mar 4, 2010

so I have a button that makes a table appear absolutely(dynamically), and I was wondering how would I go about making it disappear once I made it appear.

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